In a world where mutated humans are treated with distrust and fear, an institute for mutants battles to achieve peaceful co-existence with humanity.
Cast: Emma Dumont, Hayley Lovitt, Garret Dillahunt, Monique Grant, Jermaine Rivers, James Sterling, Amy Acker, Darion Costley, Natalie Alyn Lind, Stephen Moyer, Jeff Daniel Phillips, Percy Hynes White
Reeva prepares to carry out her plan for the Inner Circle, but not everyone is on the same page.
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.
When one of the Inner Circle goes missing, Reeva intensifies security in their compound, but realizes that her plans may have already been exposed. Furious and paranoid, Reeva resorts to violence.
Lauren stops sleeping so she can avoid the forces in her dreams pushing her towards joining Andy and giving in to her dark side. Glow is in trouble after being shot by the Purifiers, and Blink convinces the Morlocks to let Caitlin save Glow.
With the nation divided more than ever, Evangeline proposes a country-wide meeting to revive the Mutant Underground.
Reed worries as Lauren becomes intrigued by her ancestors and their violent powers. Lorna begins to reevaluate her trust in the Inner Circle after figuring out the past of Reeva's new trainees. Meanwhile, Benedict Ryan continues to encourage Jace to take action with the Purifiers. Marcos asks Clarice to go to the Morlocks in search of information on the Inner Circle and Thunderbird gets a call from Evangeline.
The Murant Underground wrestles with the idea of recruiting the Inner Circle to assist them. Andy considers reconnecting with his family when he learns about his father's powers.
Tensions within the Inner Circle are at an all-time high, as Andy comes to Rebecca's defense against Reeva. After making an important discovery about Dr. Risman's research,
Reed, Caitlin and Lauren meet with a doctor who treats patients with debilitating X genes; Lauren finds out the doctor is not who she thought she was; following the Inner Circle's bank ambush, Thunderbird and Blink continue to chase them down.
Reeva reveals her plans for a major mission for the Inner Circle to secure some needed funds. Meanwhile, the Mutant Underground must contend with Reed's unstable powers, hoping that some medical help from Caitlin and Lauren will keep his destruction in check.
The Inner Circle prepares for a secret ambush, but Polaris is reluctant to join and Reeva tasks Esme with getting Polaris on board. Esme confides in Polaris, revealing her and her sisters' troublesome past.
As Caitlin and Thunderbird struggle to save the life of a mutant injured in the Inner Circle's chaotic liberation of a psychiatric hospital, they discover clues to the identity of the powerful mutant Polaris and Andy were sent to retrieve.
The team tries to intercept the Inner Circle, who are about to raid a mutant detention facility.
The Inner Circle turns to an unexpected source for help when Polaris' baby suffers from a deadly illness.
Thunderbird hopes a mutant lawyer who recruited him to the Underground can help find the Inner Circle; Andy and Lauren have a shared dream; Reed must keep a secret from the group; Jace is back on the mutants' trail.
The Mutant Underground rescues a girl from a Sentinel raid, but fails to save her family; Eclipse and Caitlin get info on the Inner Circle with help from a criminal hacker; Polaris prepares for her baby's birth.