Lauren can't access her powers when it matters most, leaving Caitlin to take matters into her own hands when they are being pursued. Reeva finally reveals her plan for the Inner Circle and it's darker than anyone could have imagined. Meanwhile, Jace confronts some regrets about his actions and is torn between pressures from the Purifiers and his own beliefs.
The lives of an ordinary suburban family change course forever when they discover their children have developed mutant powers. When the threat of a hostile government forces the family to go on the run to protect themselves, they join the ranks of an underground network of mutants. Together, the group fight to survive in a world where fear and misunderstanding put them at constant risk.