My Future Love (2016)

In 1973, the 20-year-old Svante has a heart condition that the doctors cannot fix. When he has a breakdown on a subway platform, a strange train suddenly appears. He steps into the subway car filled with wonder, without knowing that the destination is the future. In the future he meets Elsa and together they must solve Svante's problems and figure out how to live together when they are from two different eras.