Imagine a world where the strongest creatures from the animal kingdom and the age of dinosaurs meet in combat. Sai-Kyo-Oh! Zukan adapts Gakken's children's book series of fantasy encyclopedias and sets prehistoric beasts against modern animals in a tournament to settle which one is the strongest of all. Told in short episodes, the action series turns a simple playground question into a string of battles: who would actually win? It suits viewers who love animals, dinosaurs and head-to-head competition.