The navy captain Avanti Planetaros is inspired by his astronomer-father to travel through outer space to reach other worlds. He becomes an aviator and, along with the young scientist Dr. Krafft, the driving force behind the construction of a space-ship. Despite oppostion from the mocking Professor Dubius, Planetaros gathers a crew of fearless men and takes off. During the long voyage, the crew becomes restless; a mutiny is narrowly avoided. Finally, they reach Mars and discover that the planet is inhabited by people who have reached a higher stage of development, free of diseases, sorrow, violence, sexual urges, and the fear of death. Avanti falls in love with Marya, daughter of the Prince of Wisdom, the head of the Martians. Marya shares his feelings and decides to return with him in order to bring the wisdom of the Martians to the backward Earthlings. (stumfilm.dk)
Gunnar Tolnæs
as Avanti Planetaros
Zanny Petersen
as Corona
Nicolai Neiiendam
as Professor Planetaros
Alf Blütecher
as Dr. Krafft
Svend Kornbeck
as David Dane
Philip Bech
as Martian leader - wise man
Lilly Jacobson
as Marya
Frederik Jacobsen
as Professor Dubius
Nils Asther
as Martian citizen
Alfred Osmund
as Martian priest
