httpvh://www.youtube.com/watch?v=fl5tW9P69OU

Saturday detention is thrown into disarray when a teacher is killed and the kids start to run riot. Unfortunately they have no idea that a deadly poisonous Therocephalian is stalking through the corridors looking for its next meal. To make things worse, the kids have hacked into the school’s automatic locking system, trapping and separating the ARC team as they attempt to capture the creature before it strikes again.

Directing them from the ARC Operations Room, Jess is charged with unlocking the doors and tracking the creature as the team fight their way through the corridors. At the same time, Philip has announced that Abby’s beloved menagerie of creatures, including Rex, should be destroyed; Lester and Abby must join forces to thwart him.

The team are forced to fight off the threat from different areas of the school, eventually coming across a nest of Therocephalians in the school canteen. Forced to act as the team come under attack, Connor and the kids use the school lab to create poisonous gas bombs to wipe them out. Returning to the ARC, Lester reveals Philip’s change of heart, and the menagerie is saved, while Jess begins to pay a little too much attention to an oblivious Becker…