At the end of Arcadia of My Youth Capitain Harlock and the crew of the space ship Arcadia had been banished from Earth. The Earth, as well as many other planets in the universe had been taken over by the Illumidus, a race of destructive humanoids who ruin, enslave or destroy almost any inhabitable planet they come across. In "Endless Orbit SSX" Harlock battles the Illumidus while searching for a mythical "Planet of Peace" where all the peoples of the universe can live freely and without war. (Source: Wikipedia)

The pilot Sue Harris goes to a mission on a frozen country, there she suffers an accident on the mountains and her life is in severe danger. Trying to survive on the harsh enviroment, she encounters an alien and engages in combat with it. The two beings will use all means possible to escape of that dead trap alive.

The Chojin Crown, the tournament which Mantaro (Kid Muscle) reluctantly participates in. After going along with the obstacles (most of which were created to try and eliminate him), he qualified.