When F.B.I. Agent Zack Grant's partner is killed during a blown-up operation, he attempts to find the person responsible. Mafiaso Frank Serlano believes Zack is responsible for his only sons death in the same operation and kidnaps Zacks son to hold as bait. The action gets wild when airline stewardess Mary is taken hostage to add what seems an another insurmountable problem for...。故事以史上首个自律人型AI「Vivy」为主角,是以「歌声带给众人幸福」为使命的「歌姬」。某日自称来自100年后的AI「松本(マツモト)」突然出现,并表示自己将与Vivy共同修正历史、避免100年后人类与AI发生战争,使Vivy踏上破坏AI的旅途。。