Lost Realm 1/2

In one of the wreaking crew's fights, Ryoga gets lost, this time though everyone else is with him. They end up on a world where the dinosaur still roam, and surround a lost high tech city. Ryoga cannot get lost here to lead everyone home. He always ends up in the city. The Nerima Wrecking Crew have to learn the technolagy to get back home.