Hiroshi Ôtake

A giant sea monster known as Dragonsaurus has emerged from out of nowhere, terrorizing the depths of the oceans. Great Mazinger, Grendizer and the Getter Robo G team join forces to combat the new threat. But their task becomes more complicated when Dragonsaurus swallows up Boss Borot and makes its way towards Tokyo. Source: ANN

A trilogy of separate stories. In "Labyrinth labyrinthos", a girl and her cat enter a strange world. In "Running Man", a racer takes on the ultimate opponent. In "Construction Cancellation Order", a man must shut down worker robots.