Adam, Sally, Watch and the gang can't wait for the first day of school. Though, their new science teacher, Mr. Snakol, is very weird. Later in the day, everyone starts to think that he's an alien. Soon Sally goes missing and their suspicious grow. When the gang goes deeper into school grounds, they find out Mr. Snakol is an alien! Now the kids MUST find a way to stop him. What can a few kids do to get their friend back and save the world in time?