Cyclops struggles to lead a new team of X-Men, composed of both seasoned mutants and those still finding their place, as tensions rise over differing approaches to their missions. Meanwhile, the X-Men discover that the ruthless Mr. Sinister has been kidnapping mutant children for horrific genetic experiments in an attempt to create a new, "perfect" breed of mutants. As Cyclops confronts his doubts about his leadership, he must rally the team to stop Sinister before it’s too late, while facing the moral and personal challenges of leading them through one of their most dangerous threats.
