Having survived the devastating virus which wiped out most of the planet's population, the survivors are in disarray, now struggling not just against the difficulties of day-to-day life, but also against the threat of other emerging communities and the machinations of the sinister Lab. Season 2 of this action-packed drama starring Julie Graham, Max Beesley, and Paterson Joseph begins with Abby being held by Whittaker as the scientists search for a vaccine, while the others race to save Greg's life. But this is just the beginning as the group is forced time and again to ask themselves: are they in it together, or is it each man for himself?