Alan, Walker, Hatake and Daniel set a trap for an assassin who has been sent by Ilaria to retrieve both the virus and the cure.

In the Season 1 finale, Alan and Walker battle the Scythe to save the world from disaster.

In the second-season premiere, Drs. Peter Farragut and Sarah Jordan are joined by Kyle Sommer when they battle a new deadly virus on a mysterious wooded island.