The story is like the resonance of the Western-style sci-fi world and some details in the East Asian martial arts books.

If Voltron is merely a machine, Hesman grew out of this archetype and has been given a personality, which can be described as serious but occasionally displays cunning and a sense of humor.

The main setting is the end of the 23rd century, a group of young people on Arus have the ambition to return to Earth to rebuild human civilization.

However, the return journey is very uncertain because forces from other planets are attempting to dominate the universe through brutal and environmentally harmful measures.

Faced with an urgent situation, the king of Arus must cooperate with scientist Kazad to create a lion robot capable of moving around planets to protect peace-loving persons.