A girl entering puberty exhibits telepathic abilities, and the crew must decide whether to turn her over to the Psi Corps. The corpse of the Minbari military leader who oversaw the Battle of the Line is the focus of a diplomatic incident.
When discussing the Minbari War Leader's past with Sinclair, Delenn is shown attaching components to the machine which she uses in "Chrysalis" alongside the Triluminary.
Minbari Cruisers usually approach alien vessels and stations with their gun ports open as a sign of respect, at least to the warrior caste. This detail is very significant, because it was one of the reasons for the start of the Earth-Minbari War (Earth misunderstood the act; they took open gun ports as a sign of aggression).
This episode was originally intended to be the second-last of Season 1. Delenn paralyzes the guards using the triluminary, which she obtained in "Babylon Squared".