Marineofficeren Avanti Planetaros sætter sig for at kortlægge himmelrummet og udforske dets planeter. Sammen med ingeniøren dr. Krafft bygger han et himmelskib, der skal fragte ham og hans mandskab til fjerne galakser. Da skibet står klar, drager Avanti og co. ud på en lang rejse, der ender på Mars. Her lever et fredselskende, frugtspisende folk, der nok kan lære menneskene et og andet.

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)

Menschliche Forscher treffen auf vegetarische Marsianer.

Фильм повествует об отважных путешественниках отправившихся на космическом корабле «Эксельсиор» в опасное путешествие на планету Марс.

La película, dirigida por Holger-Madsen, desarrolla los planes de un doctor, cuyo ídolo es Cristobal Colón (aunque le atribuye erróneamente la intención de dar la vuelta al mundo), para viajar a Marte. Para ello, en sólo dos años logra construir una nave, el Excelsior, y logra captar como voluntarios a un puñado de expedicionarios, uno de ellos comprometido con una joven llamada Corona.