After an explosion on Main Street leaves two key residents of Wayward Pines in critical condition, Ethan is determined to find out who is responsible for the horrific act. Meanwhile, Harold opts out of the covert operation he and Kate were planning, and Nurse Pam interviews surveillance engineers to find out if there are any workers responsible for falsely reporting activities of any Wayward Pines residents.

After Pilcher decides to turn off the electricity in Wayward Pines - with deadly repercussions - Ethan and Kate take the initiative to make sure everyone is out of harm's way. Meanwhile, Nurse Pam confronts Pilcher on his decision and tries to convince him to reconsider, Ethan and Kate plan for an attack and the first generation tries to protect the future of Wayward Pines by taking matters into their own hands.