In 2199, five years after the Gamilons began an invasion of Earth, the planet has been ravaged by the aliens’ bombs. The remnants of humanity have fled underground to escape the irradiated surface. One day, former pilot Susumu Kodai discovers a capsule sent from the planet Iscandar that tells of a device that can remove the radiation from the Earth’s surface. The Earth Defense Force rebuilds the battleship Yamato with a new type of propulsion system to make the 148,000 light year trip to Iscandar in hopes of saving the Earth. Within one year, the radiation will drive the rest of humanity to extinction.

It’s 1982, and Taeko is 27 years old, unmarried, and has lived her whole life in Tokyo. She decides to visit her family in the countryside, and as the train travels through the night, memories flood back of her younger years: the first immature stirrings of romance, the onset of puberty, and the frustrations of math and boys. At the station she is met by young farmer Toshio, and the encounters with him begin to reconnect her to forgotten longings. In lyrical switches between the present and the past, Taeko contemplates the arc of her life, and wonders if she has been true to the dreams of her childhood self.