Dragon Ball - episode 10 - 29 Apr, 1986

While they are driving towards the final Dragon Ball, Shu in his battle robot fires a rocket at their car. Then he jumps down and runs off with Bulma's suitcase, which contains their Dragon Balls. Goku tries to follow, but loses him. Luckily, Goku still has the Four-Star Ball, so Pilaf can't make his wish to rule the world. Bulma's Dyno-Caps were in her suitcase as well, so they have no ride. With no other options, Yamcha is forced to give them a lift. They arrive at Pilaf's castle. Inside, they come to a dead end, but before they can turn around, a wall comes down, trapping them inside. (Source: Wikipedia)