Gorilla Grodd invents a time conveyor to allow anyone to travel through time. Black Manta and Giganta trap Aquaman and Apache Chief in 70 000 000 B.C and rob South Africa's diamond mines Sinestro and Captain Cold trap Green Lantern and Samurai in 500 A.D and rob King Arthur while Grodd and Solomon Grundy trap Batman and Robin in Ancient Rome and rob Caesar the emperor. The Legion of Doom learn a hard lesson in underestimating the Super Friends when they are foiled once more.