When an accident happens during an experiment involving a machine which visualizes the contents of human minds, developer MISHIMA Soichi loses consciousness. His wife and co-developer, Midori, continues the development in an attempt to visualize Soichi’s mind. Is the human mind identical with the actual human? This sci-fi drama, based on an experimental short film by the director, depicts love and skepticism through the relationships between researchers who visualize human minds.

During an experiment of a machine designed to visualize a person's inner mind, an accident occurs leaving its inventor unconscious. The inventor's wife, Aoi (Shirakawa Nanami), continues the research in an effort to visualize her husband's feelings. Masaki (Yoshida Ryuichi) arrives at the laboratory to announce the suspension of the research, but is taken with Aoi instead.

Haruki, a biracial student decides to quit college and travel to Japan. Makoto is a construction worker raised in the projects of Kansai who is also biracial. Haruki and Makoto grow closer and begin their journey from "Half" to "Whole."