Saturday detention is thrown into disarray when a deadly Therocephalian attacks a teacher, allowing the kids to run riot. The team are soon faced with not only tracking down the creatures, but fighting against the antics of a group of terrified students. Finding a Therocephalian nest in the school canteen, Connor enlists the help of the kids to stun the creatures into submission before returning them through the anomaly.
Elenco: Ciarán McMenamin , Andrew-Lee Potts , Hannah Spearritt , Ben Mansfield , Alexander Siddig , Janice Byrne , Ruth Kearney , Ruth Bradley , Ben Miller .