Saga and Martin receive an anonymous tip about the eco-terrorists, who now know the police are onto them. The group continues with their operations but struggle with internal tensions. Martin continues to see Jens, hoping for closure.
When someone threatens to blow up a chemical plant, Saga and Martin link all the clues to a common denominator. They pinpoint the perpetrator's location, but will they find what they expect? Martin secretly pries into Saga's past.
Saga and Martin investigate the killing of the eco-terrorists and suspect there is a leader still alive who's been pulling the strings all along. Are there new attacks being planned? Are there more terrorist cells?
A key witness wakes up at the hospital but is suffering from amnesia. Meanwhile, four individuals wearing animal masks carry out a new attack and claim responsibility in an online video. Martin visits Jens again but this time exceeds his authority.