An anomaly opens at the West London Hospital, causing a group of Diictodon to emerge. They promptly chew through the power cables, cutting the power to the building. Cutter, Abby, Connor and Becker arrive to investigate and evacuate the building as does journalist Mick Harper (Ramon Tikaram) from Evening News HQ, who wants to get evidence of the creatures to expose to the public. However, they return to find Helen and her Cleaner Replica troops (including a clone of Cutter) have taken over the ARC, so they can interrogate the real Cutter about the artifact. As a bomb blast tears the ARC apart and the team battle for survival, Helen declares that she must stop the ARC'S research from destroying the world at any cost... even if it means killing her husband.
