Hatcher gives up his search of Yellowstone and turns his sights for home. Just as things are starting to look up for the survivors, tragedy strikes and old friends pay dearly for their complacency.

Broussard and Chaplain set up shop in Fort Collins with the rest of the CDC personnel. Can peace truly be had with the infected still roaming the hills?

Simon and his new group of survivors try to carve out a life in the mountains. As he continues to turn from who he was, those around him insist on poking the bear, doing their best to force him back to who he once was. Is he willing to pay the ultimate price to maintain his humanity?