In the 1960s, Okinawa was under American military occupation. Young Takeshi leads a passive go-with-the-flow existence, working as a bartender at a bar called Sekai where his ex-girlfriend Michi also worked. When Takeshi launches a flare bomb during a military blackout, expressing his frustration with the American military as well as himself, he encounters a mysterious boy with no name. He undergoes various changes living with him, but then an event occurs which will destroy Takeshi's identity to the very roots.

"It's all about love! It's all about us!"