After a devastating home invasion leaves his wife, Nina, dead, Evan, a pianist in an orchestra, is shattered. Once a pacifist who believed in avoiding conflict, he finds himself spiraling into depression as he struggles with his inability to protect her. Despite the support of his close friends, he feels adrift until a chance encounter with a televised UFC fight ignites something within him. Driven by grief and a desire for redemption, Evan begins training in martial arts, embarking on a journey that forces him to confront his beliefs about violence, justice, and self-control.