HARLOCK SAGA: THE RING OF THE NIBELUNG

Captain Harlock is drawn into a saga of intergalactic proportions when the son of a deceased comrade unwittingly forges the Ring of the Niebelung. Evil forces gather to wage war against the last remaining superpowers of the galaxy led by a demented outcast. Harlock must counter the amassed armadas that threaten the last gods and recover the ring before Paradise is lost. (Source: Anime News Network) — Description from AniList community (anilist.co).