Ben is placed in harm's way by someone who he thought he could trust. Tom captures another hostage. Weaver offers Matt a job to lift his spirits and make him feel useful. And when members of the 2nd Mass are trapped in the basement of a building, the situation takes a turn for the worst when they find themselves faced with a new enemy.
When skitters approach the newly combined resistance force, the groups' interaction surprises everyone. Meanwhile, Tom finds out life-changing news just as the 2nd Mass comes face-to-face with their most dangerous threat to date.