Power Rangers Dino Charge Episode 4 Return of the Caveman Episode Title:Return of the Caveman.Episode Description:Chase and Koda are trapped in a cave by Slammer, one of Sledge's monsters. Koda must rely on his caveman instincts to save himself, Chase, and a young boy named Peter. Meanwhile, the Rangers get new Dino Cycles and Riley gains use of the Raptor Zord.