Dr. Campbell attends an anti-mutant summit, attempting to take the Hound program national; some of the team at Mutant HQ goes on a dangerous mission to stop him.
Polaris learns more about her past; Mutant HQ comes under attack.
The mutants devise a plan to take down Sentinel Services; Eclipse looks to an old friend to obtain information; Lauren and Andy attempt to combine their powers to help the group.
Tensions heat up Mutant HQ; Reed fears for his family's safety and rethinks their future at the compound; Dr. Campbell proposes an improved program to Jace that could change everything.
Blink goes into shock after exerting her powers beyond their limits; Caitlin and Eclipse must find a special serum that will help Blink recover; Reed faces some difficult choices about his family; Polaris runs into some trouble.