Master Roshi tells Goku and Krillin to take a break from training for now, but Krillin still decides to go live with him. Goku sets off on his search for the four-star Dragon Ball. Meanwhile, Nam has arrived at his village with the water, but it is still not enough. The river has run dry, so Nam heads upstream to find the source of the disturbance. He is attacked by a dinosaur, but luckily Goku is swimming in a nearby lake and comes to rescue him. He and Nam continue upstream and find that a dam has been built. The monsters that live there refuse to tear it down. Their leader, Giran…