Lost World

A boy researcher and a private detective join an expedition to a planet where dinosaurs roam an ancient world. Planet Mamango was torn from Earth in ancient times and, after five million years, is drawing near again. When private detective Ban Shunsaku encounters a murder, he meets young researcher Kenichi Shikishima, who holds the key to solving the case. Shikishima discovers that a stone from Mamango produces immense energy and uses it to build a rocket. He leads an expedition with Captain Butamo Makeru, the cabbages Ayame and Momiji, a rabbit named Mii, and Ban. After landing on Mamango, they find a lost world covered in ferns and cycads, where dinosaurs still walk.