On an archaelogical mission to the end of the known universe, Professor Daiba unwitting unleashes an ancient horror from its confines. Five years later the malevolent alien force sets in motion a plan which reunites the various crewmembers of the Arcadia to sail the stars once more as well as bring Tadashi Daiba to meet Harlock for the first time (again).

Hikaru is at first sight a student like others but actually it is a super hero defending the Earth of the demons. He has a powerful super bike and a combat suit. Inspired by the classic Space Sheriff (Uchuu Keiji) trilogy of the Metal Heroes Tokusatsu franchise, namely Space Sheriff's Gavan and Sharivan.

Based on the comics by the late Nekojiru. Contains 23 animated shorts aired TV Asahi Network's show "Bokusho Mondai Boss Chara Ou." and 4 unbroadcast episodes.

In the not-too-distant future, the human world has long been overpopulated. Humanity marched to the stars in search of a new home, and just as this was going on, the moon's alignment caused massive earthquakes to ripple across the world, lasting several decades. Humanity was demolished. When the land finally recovered, humanity reemerged to face this strange yet familiar world. Will we, who once lorded over this domain, still remain the masters of this world?