Kinnikuman was supposed to return to his home planet and become king after defeating the greatest foe he ever faced, Super Phoenix... He's about to marry Bibimbap and yet for some reason, he returns to Earth instead. His destination is the nostalgic and familiar Kinniku House in Den-en-chofu, Tokyo. All his previous allies have gathered there. Kinnikuman and his staunchest ally Terryman throw down in a no-holds-barred sparring match as a "wedding present" for the groom-to-be. They reflect on their past selves and encounters, reminiscing about the old days full of fierce matches.

[Source: PONY CANYON ANIME]