After Kate and Michael rescue Sarah, Holly and Holly's two children from the Willits farm, Kate is tasked with getting Holly and her kids to the Hopkins' Compound in Missouri. On their first day on the road, they learn that someone has killed the Willitses and burned their farm to the ground, making Sarah and Holly the prime suspects. As Kate drives her charges to Missouri as fast as possible, she hits an unexpected speed bump from her past. Will it expose the truth about her?