Thunderbird contacts a mutant lawyer who recruited him to the Underground years ago, hoping she can help him find the Inner Circle. Lauren and Andy have a shared dream, which distracts Andy from his training and prompts Reeva to consider cutting her losses with him, which, in turn, makes Andy second-guess his separation from his sister. Meanwhile, Reed must keep a huge secret from the group and Jace picks up the mutants' trail again.
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.