A pioneering roboticist awakens in 2025 after decades in cryosleep. To change the past and reunite with his adopted sister, he seeks a way back to 1995.
The Door into Summer is a 2021 Japanese science fiction film directed by Takahiro Miki and starring Kento Yamazaki, Kaya Kiyohara, Naohito Fujiki, Natsuna, and Hidekazu Mashima. Based on Robert A. Heinlein's novel of the same name, it was released on June 25, 2021.
