Wing and Raven find themselves in a deadly race against time to track Otto down before the other G.L.O.V.E. assassins get to him. Their pursuit takes them to a secret facility hidden deep within the Amazon rainforest, where they face a mysterious operative even deadlier than Raven. Meanwhile back at H.I.V.E., the school's own automated defence systems turn against the pupils and staff, and there is no one there to stop it.