Watch Waga Seishun no Arcadia: Mugen Kidou SSX Online

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.

Earth has been conquered by the evil Illumidus Empire, with parallels drawn to the U.S. post World War II occupation of Japan. Captain Harlock with a group that will become his life long friends begin their fight against this tyranny visited upon the planet Earth, with no regard to the costs the struggle will have on them, caring only for the ideal of restoring freedom to the people of Earth.