As the Flag Smashers escalate their efforts, Sam and Bucky take action.
Thunderbird spearheads a mission to get answers about what happened to his friend; Lauren encounters a new friend with useful powers.
Eclipse's ex-lover returns; Reed and Sage find alarming information about Lauren's new friend; Thunderbird helps Blink open up about her past; Jace approves a special surveillance program.
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.