In the year 2080, the world is connected by a massive computer network. Combiners have developed a process that allows them to merge the souls of human and machine/cyborg, wreaking havoc in a deeply divided society.
The film focuses on a timid eleventh-grade math genius named Kenji Koiso who has been falsely implicated in the hacking of a virtual world and, with the aid of a classmate's extensive family, must prevent the real and computer-simulated worlds from colliding.