In this special
Jack reunites with two old friends from his past (spoiler alret it's Kim and Andrew and along with their one and a half year old son Danny named after Danny Lewis)
They spend the whole day like the old times but Disaster by the arrival of new Science teacher David Lucian (Played by lucifer eh I mean tom ellis) forcing the newly Reunited trio to help a pupil Who has been manipulated into thinking Kim's dead
