The life story of a prominent Slovak scientist, soldier, diplomat and politician who contributed to the creation of conditions for the formation of an independent Czechoslovakia. He died in a plane crash on May 4, 1919.

Two roommates – Ivan Trnovský, a university student from a wealthy family, and Petr Gazdík, a young composer, try to win the affections of a young teacher, Hanka. She teaches schoolchildren to ski, and Ivan arranges a Christmas stay with her in the Tatra Mountains, in a cottage under the Devil's Wall...