Cho Osaki, a master ninja, escapes Japan after his family is brutally massacred by rival ninjas. Seeking a fresh start, he relocates to Los Angeles with his son Kane and grandmother. His friend Braden manipulates his trust by convincing him to open an art gallery that fronts his drug-smuggling operation, but Cho remains unaware. As Cho establishes his new life, Kane adjusts to American culture while training in ninjutsu. Suspicion arises when he discovers strange happenings around the gallery, prompting Cho to investigate further.

As tensions mount, Cho learns of Braden’s betrayal and the dark underworld he has inadvertently been drawn into. Cho’s efforts to unravel the conspiracy leads him into a series of deadly confrontations, where he must use his ninja skills to protect his family and seek justice. Explosive battles and martial arts showcases ensue, pitting Cho against an array of formidable adversaries. The stakes rise as Cho navigates a treacherous path that tests his honor and resilience, culminating in a decisive confrontation that threatens everything he holds dear.