Conrad unwittingly makes the situation more difficult when he defends Nic after she becomes a suspect in the investigation of Lily's death; during a low-risk procedure, Bell's patient catches on fire.
A trip to Hollywood to compete on their favourite game show turns sour for the roommates.
A group of terrorists are trying to steal diamonds to trade for a weapon of mass destruction. MacGyver and the team must attempt to steal the jewels first.
Dr Campbell attends an anti-mutant summit, and members of Mutant HQ set out on a dangerous mission to stop Dr Campbell's efforts to take the Hound programme national.
Mutant HQ comes under attack, and relationships are pushed to their limits while alliances shift. Meanwhile, Polaris learns more about her past, and makes a decision with the potential to change everything.