In 1983, a young man on the run from the police is inexplicably transported to 2050. With no memory of his past and newly acquired superhuman abilities, he is recruited by the Neo Tokyo Mobile Police Unit to help dismantle the ruthless crime syndicate known as Necrime. Now called Ryu Urashima, he must confront the dangers of the future while searching for a way back to his own time, or risk being trapped in the future forever.