The story in “Silver” is about a female wrestler who is really an undercover agent. Disguised as a wrestling warrior, heroine Jun Shirogane (Atsuko Sakuraba) goes after the gang that killed her family in Takashi Miike’s action-packed thriller. Aided by secret service colleague Yusuke Minamida (Kenji Haga), Jun goes undercover as Silver, a formidable fighter in the professional women’s wrestling circuit. But Jun’s success in the ring doesn’t distract her from her primary mission: exacting revenge on the Paradise gang.