After a young boy captures a rare butterfly in Nagasaki, a caterpillar begins a relay-trip toward the northern tip of Hokkaido, serving as a silent witness to a series of vignettes featuring people struggling with the psychological and social scars of post-war Japan.

A young woman (Dan) who worked as a prostitute in the days following World War II finds herself sexually dissatisfied with her husband and contemplates returning to an old lover who comes back into her life.

In 1960s Tokyo, Gonda owns a bar in which the gay, cross-dresser, and trans scenes meet. Gonda is in a relationship with the madam of the bar, Leda. As the younger Eddie starts a passionate affair with Gonda, she ignites the jealousy of Leda, unaware of another kind of history between them.