List of Transformers: Prime episodes

Transformers: Prime is a TV series which premiered on November 29, 2010, on The Hub, Hasbro's and Discovery joint venture, which began broadcasting on October 10, 2010, in the United States. The series was also previewed on The Hub on November 26, 2010, as a one hour special. Transformers: Prime was later renewed for a second season, which premiered on February 18, 2012 also on The Hub.

Series Overview

Season		Episodes	Originally aired (U.S. dates)		DVD and Blu-ray release date
			Season premiere	Season finale	Region 1/A	Region 2/B
	Mini-Series	5	November 29, 2010 November 26, 2010 (preview)	December 3, 2010	December 6, 2011 March 6, 2012 (Blu-ray)	—
	1	21	February 11, 2011	October 15, 2011	March 6, 2012	—
	2	26	February 18, 2012	—	—	—

Episodes

Mini-Series

№	#	Episode title	Director	Writer(s)	U.S. Original Airdate	Prod. code
1	1	"Darkness Rising, Part 1"	David Hartman	Duane Capizzi	November 29, 2010 November 26, 2010 (preview)	101
In Jasper, Nevada, three young humans, Jack Darby, Miko Nakadai and Rafael Esquivel, are accidentally caught in the crossfire in a fight between giant, mechanical aliens that transform into ordinary vehicles. The three kids are taken to the base of the Autobots, where their leader Optimus Prime explains that they are a race of autonomous robotic organisms from the far-off planet Cybertron, and they are fighting over their life-source, Energon, with the Decepticons, with whom they once had a war with.
2	2	"Darkness Rising, Part 2"	David Hartman	Nicole Dubuc	November 30, 2010 November 26, 2010 (preview)	102
The Decepticon leader Megatron returns from a three-year exile with a plan to exploit the life-giving properties of a mysterious substance called 'Dark Energon'. The Autobots storm an Energon mine in search of their lost comrade Cliffjumper, only to discover that his dead body has been revived as a ravenous zombie by Dark Energon.
3	3	"Darkness Rising, Part 3"	Todd Waterman	Marsha F.Griffin	December 1, 2010	103
Optimus Prime and Ratchet head out to investigate Megatron's activities while Arcee and Bumblebee go on patrol, leaving Bulkhead with the three kids. However, complications arise when Soundwave sends his flying minion to capture the Autobot allied human Agent William Fowler, with Starscream wishing to learn the location of the Autobot base.
4	4	"Darkness Rising, Part 4"	Shaunt Nigoghossian	Steven Melching	December 2, 2010	104
Bulkhead, Arcee and Bumblebee sneak on to the Decepticon's flagship, The Nemesis, to rescue Agent Fowler, while Optimus and Ratchet fight off Megatron and a horde of Dark Energon zombies.
5	5	"Darkness Rising, Part 5"	Vinton Heuck	Joseph Khur	December 3, 2010	105
With the Decepticons completing their Space Bridge to Cybertron, Optimus Prime and the Autobots race to stop Megatron from opening the Bridge and bringing forth a vast army of Dark Energon zombies from the Transformers' dead home planet.

Season 1

№	#	Episode title	Director	Writer(s)	U.S. Original Airdate	Prod. code
6	1	"Masters and Students"	Todd Waterman	David Slack	February 11, 2011	106
Following Megatron's supposed death at the end of the last episode, Starscream asserts himself as the new Decepticon leader, but to his annoyance, he finds that the troops don't respect him as much they did Megatron. In order to gain their respect, Starscream awakens Skyquake, a legendary Decepticon warrior that was locked in stasis on Earth for centuries, and attempts to recruit him into his new army. Meanwhile, Ratchet agrees to help Jack, Miko and Rafael with their school science projects, with explosive results.
7	2	"Scrapheap"	Shaunt Nigoghossian	Marsha Griffin	February 18, 2011	107
While on a scouting mission in the Arctic, Bulkhead and Bumblebee find a crashed pod buried in the ice. They bring it back to base for examination, and Optimus Prime and Arcee venture out into the Arctic to find clues on the pod's origin. While they are out, the other Autobots discover that the pod contains a large swarm of Scraplets, a vicious and highly dangerous form of Cybertronian wildlife that eats metal. The Scraplets infest the Autobot base, devouring any metal in sight and damaging the Ground Bridge, leaving Optimus and Arcee stranded in the Arctic.
8	3	"Con Job"	Vinton Heuck	Steven Melching	February 25, 2011	108
The Autobots receive a message from Wheeljack, an old friend of Bulkhead from the war, who is visiting Earth while journeying across the galaxy. Upon picking up the message's signal, Starscream and Soundwave capture Wheeljack before he can meet the Autobots, and send in Makeshift, a Decepticon spy able to take on any form, disguised as Wheeljack to discover the location of the Autobot base.
9	4	"Convoy"	Todd Waterman	Joseph Kuhr	March 4, 2011	109
Agent Fowler asks for the Autobots' assistance in transporting a powerful nuclear device to a military base, but since sending such a device through the Ground Bridge could be potentially dangerous, they have to travel by road. Along the way, the Autobots are ambushed by M.E.C.H., a terrorist organisation who wish to steal the nuclear device and use it for their own nefarious purposes.
10	5	"Deus Ex Machina"	Shaunt Nigoghossian	Nicole Dubuc	March 11, 2011	110
The Autobots discover that an Energon Harvester, an ancient and powerful device from Cybertron's distant past, is on display in a history museum, and they attempt to retrieve it with Jack, Miko and Rafael's aid before it falls into the wrong hands. Unfortunately, Starscream also learns of the Harvester's whereabouts, and sends Soundwave, along with new Decepticons Knock-Out and Breakdown, to obtain it.
11	6	"Speed Metal"	Vinton Heuck	Dean Stefan	April 9, 2011	111
In an attempt to get even with school bully Vince, as well as impress his crush Sierra, Jack convinces Bumblebee to help him win an illegal street race. However, complications arise when Knock-Out gets involved in the action, kidnapping Vince in the belief that he is Bumblebee's human partner.
12	7	"Predatory"	Todd Waterman Kirk Van Wormer (Co-Director)	Marsha Griffin	April 16, 2011	112
Jack accompanies Arcee on a routine scouting mission in a forest, where they discover a crashed space ship in a clearing. They soon discover that the owner of the ship, the deadly and ruthless Decepticon Airachnid, is still prowling the forest in search of a human to hunt, putting Jack in danger... Note: Due to a death in her family, Susan Blu no longer works as voice director. From the this episode onwards, Jamie Simone replaces Blu as voice director.
13	8	"Sick Mind"	Shaunt Nigoghossian	Steven Melching	April 30, 2011 April 29, 2011 (Comcast On Demand)	113
14	9	"Out of His Head"	Vinton Heuck	Nicole Dubuc	May 7, 2011	114
Following on from the events of the last episode, Megatron's sub-concious has mistakenly downloaded into Bumblebee's head. Megatron manipulates Bumblebee's mind in a plan to return to his original body and reclaim Decepticon leadership. Meanwhile, Starscream steals the lens from a powerful space telescope and attempts to use it to melt through Arctic ice to gain access to an underground Energon deposit.
15	10	"Shadowzone"	Todd Waterman	Marsha Griffin	May 14, 2011	115
16	11	"Operation: Breakdown"	Shaunt Nigoghossian	Steven Melching	June 18, 2011	116
During a fight with Bulkhead in an abandoned town, Breakdown is captured by M.E.C.H., who wish to dismantle him and research his inner workings. Optimus Prime and Starscream both lead separate rescue missions to save Breakdown.
17	12	"Crisscross"	Vinton Heuck	Joseph Kuhr	June 25, 2011	117
Airachnid teams up with M.E.C.H. in a plot to kidnap Jack's mother June, intending to use her as bait to lure Jack and Arcee to M.E.C.H.'s hideout, so Arcee can be captured and used in M.E.C.H.'s experiments.
18	13	"Metal Attraction"	Todd Waterman	Nicole Dubuc	July 9, 2011	118
Bulkhead and Arcee, with Miko tagging along, are sent on a reconnaissance mission to investigate a bizarre energy signal. They discover that the signal is coming from a Polarity Gauntlet, a weapon that manipulates magnetic fields, however, they soon come into conflict with Airachnid and Breakdown, who both want the Gauntlet for themselves.
19	14	"Rock Bottom"	Shaunt Nigoghossian	Tim Jones	July 16, 2011	119
Arcee, Bulkhead, Jack and Miko investigate an old Decepticon Energon mine that was supposedly stripped clean. Megatron and Starscream arrive shortly after, with Megatron accusing Starscream of hoarding Energon, and revealing that he knows about Starscream's other treacherous acts. Megatron is about to kill his devious second-in-command when he notices Jack and Arcee, and immediately opens fire on them. This accidentally causes a massive cave-in, leaving everyone trapped inside the mine with no way out.
20	15	"Partners"	Vinton Heuck	Mike Johnson	July 23, 2011	120
Megatron sends Starscream and Airachnid to the site of a crashed Decepticon ship in order to recover The Immobilizer, a powerful weapon with the ability to freeze Cybertronians in their tracks. But after the Autobots discover Starscream bound up in Airachnid's web, they are surprised when the Decepticon states that he wishes to join them... Note: This episode is dedicated to the memory of Captain H.L. Larry Cullen (Peter Cullen's older brother who helped inspire Optimus Prime's voice), who died in March 2011.
21	16	"T.M.I."	Todd Waterman	Joseph Kuhr	September 10, 2011	121
Miko rushes out onto the battlefield during a fight between the Autobots and the Decepticons in an attempt to help retrieve a Data Cylinder, a device containing knowledge of Cybertronian society. While attempting to push it into an open Ground Bridge, she accidentally activates the cylinder, which downloads all of its information, in this case the formula for a Synthetic Energon, into Bulkhead's brain. Soon, Bulkhead begins to rhyme off the complicated formula, painting the equation on the walls, and Miko becomes scared when her friend's personality and memories begin to slip away.
22	17	"Stronger, Faster"	Shaunt Nigoghossian	Mairghread Scott	September 17, 2011	122
Following from the events of the previous episode, Ratchet tests the Synthetic Energon formula from the Data Cylinder on engines. Feeling confident in the its ability, he injects himself with the formula. At first the results are positive, the formula greatly increasing Ratchet's strength, speed and agility. But before long, the formula starts to have negative effects on his personality...
23	18	"One Shall Fall"	Vinton Heuck	Duane Capizzi Joseph Kuhr	September 24, 2011	123
Optimus recites a passage from the Covenant of Primus, detailing a doomsday prophecy connected to Earth and involving Megatron. Following an attack on Rafael and Bumblebee by Megatron that leaves Raf in a critical state, and the Decepticons attempting to steal components for a Space Bridge, Optimus decides to confront Megatron and finish him once and for all.
24	19	"One Shall Rise, Part 1"	Todd Waterman	Nicole Dubuc Duane Capizzi	October 1, 2011	124
The ancient, benevolent being Unicron awakens from the centre of the Earth after millennia of stasis, causing an epidemic of natural disasters across the globe, and sending Dark Energon erupting from volcanoes. Optimus explains the history of Unicron and his battle with Primus, deducing that Unicron actually is the Earth's core, while Megatron attempts to pledge his allegiance to the Chaos-Bringer.
25	20	"One Shall Rise, Part 2"	Shaunt Nigoghossian	Marsha Griffin	October 8, 2011	125
After assisting the Autobots in a fight against an army of avatars of Unicron made from rocks and soil, Megatron forms an uneasy alliance with his enemies to defeat Unicron and save the Earth from destruction. They hatch a plan to travel to the Earth's core to send Unicron back into stasis using the Matrix of Leadership.
26	21	"One Shall Rise, Part 3"	Vinton Heuck	Steven Melching	October 15, 2011	126
While Ratchet tells Jack and the other humans about Optimus Prime's history on Cybertron, the battle begins at the Earth's core, with Megatron and the Autobots battling against Unicron's bat-like anti-bodies to reach the Chaos-Bringer's spark chamber.

Season 2

№	#	Episode title	Director	Writer(s)	U.S. Original Airdate	Prod. code
27	1	"Orion Pax, Part 1"	Vinton Heuck	Nicole Dubuc	February 18, 2012	201
Following the events of the season 1 finale, Optimus Prime has lost all memory of ever being a Prime after using the Matrix of Leadership to send Unicron back into stasis; he now thinks he is the data clerk Orion Pax. Megatron uses this to his advantage, telling 'Orion' that the Autobots are evil and setting him to work on a project deciphering Autobot enscriptions. Back at base, the other Autobots are distraught at this turn of events, and upon discovering that Jack has the Key to Vector Sigma, they hatch a plan to get their leader back.
28	2	"Orion Pax, Part 2"	Scooter Tidwell	Mairghread Scott	February 25, 2012	202
With the help of information from Starscream, the Autobots commandeer the Decepticon's Space Bridge to send Jack and Arcee to the Transformers' home world of Cybertron, with a plan to use the information stored in Vector Sigma to restore Optimus's memories. Meanwhile, after a run-in with Starscream, 'Orion' begins to wonder if Megatron is telling him the whole truth...
29	3	"Orion Pax, Part 3"	Shaunt Nigoghossian	Joseph Kuhr	March 3, 2012	203
On Cybertron, while on their way to Vector Sigma, Jack and Arcee are attacked by a savage creature called an Insecticon, as well as a swarm of Scraplets. On the Nemesis, 'Orion', desperate to know the truth about who he really is, begins to rebel against Megatron and uncover the elaborate lies put in front of him.
30	4	"Operation: Bumblebee, Part 1"	Todd Waterman	Marty Isenberg	March 10, 2012	204
While investigating an Energy signal that could potentially lead to a Cybertronian artefact, Bumblebee is ambushed by M.E.C.H, who knock him out and steal his T-Cog, the device that allows Transformers to scan vehicle modes and transform. Discovering that he is no longer able to transform into vehicle mode, Bumblebee has no choice but to stay at base, which leaves him frustrated. Meanwhile, as M.E.C.H attempts to use Bumblebee's T-Cog in one of their own robots, Starscream approaches Silas and suggests an alliance with M.E.C.H., offering his knowledge and advice on Cybertronian technology and how it works.
31	5	"Operation: Bumblebee, Part 2"	Vinton Heuck	Nicole Dubuc	March 17, 2012	205
Ratchet, still feeling guilty about failing to repair Bumblebee's voice box during the war, volunteers to give Bumblebee his own T-Cog via transplant. The resulting operation is interupted however, when an alarm signals the discovery of another Cybertronian relic, a legendary hammer known as The Forge of Solus Prime. While Optimus Prime, Bulkhead and Arcee are out retrieving the hammer, Agent Fowler calls the base to inform the Autobots of newly discovered coordinates to a M.E.C.H. hideout. Seeing an opportunity, Bumblebee storms the M.E.C.H hideout on his own to get his T-Cog back. Bumblebee's T-cog is destoryed by Starscream.
32	6	"Loose Cannons"	Scooter Tidwell	David McDermott	March 24, 2012	206
Wheeljack returns to Earth while looking for Dreadwing, beacuse Dreadwing killed Wheeljack's friend in space. Dreadwing puts a bomb on Bulkhead. Optimus tries to catch Dreadwing before the bomb goes off.
33	7	"Crossfire"	TBA	TBA	March 31, 2012	207
Airachnid and Starscream fight for control over a wild Insecticon that has appeared on Earth.
34	8	"Nemesis Prime"	TBA	TBA	April 7, 2012	208
M.E.C.H brings forth its master plan by turning Optimus into the destructive Nemesis Prime.
35	9	"Grill"	TBA	TBA	April 14, 2012	209
Agent Fowler has some explaining to do under the threat of military tribunal and Team Prime's termination.