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.
The Swedish 19th century engineer Salomon August Andrée sets out to become the first man on the north pole. His idea is to launch a polar expedition using a hydrogen balloon, together with two friends. The balloon, "The Eagle", takes off from Svalbard in 1897, but the three men are not heard of again.
