Three years after the Hiroshima bombing, a teenager helps a group of orphans to survive and find their new life.

Akihiro, a native japanese filmmaker living in Paris, came to Japan to interview survivors for a documentary celebrating the 70th anniversary of the atomic bombing of Hiroshima. Deeply moved by the interviews, he decided to take a break and wanders through the city during which he meets Michiko, a merry and enigmatic young woman. Michiko takes him for a joyful and improvised journey from the city towards the sea where the horrors of the past are mingled to the simplicity of the present.