Dave and Sarah are pretty happy in the Middle-of-Nowhere, Montana. They’ve done their part in saving the world (kind of) and now they’re settling in for a long life of killing straggler zombies. Well, they think that’s what they’re doing until a helicopter lands on their front lawn with old friends Nicole Nessing and Robbie “The Kid” on board. They propose a dangerous plan: Dave and Sarah must return to Seattle and use Dave’s Superpowers to help with the final stages of a formula that will not only wipe out most of the zombies, but innocluate humans against the virus.
Going back to Seattle was never in the plan. Especially since Sarah has a few secrets of her own that could change her marriage, increase the danger they’re facing and even alter the future they’re so desperately trying to save.