The Ox-King on Fire Mountain - S1.E7

Goku, Bulma, and Oolong continue on their quest in a car given to them by Yamcha, who is secretly following them due to a tracking device in the car. He plans to steal the dragon balls from them. The next stop is Fire Mountain, where supposedly the mighty Ox King has the 6th dragon ball. Goku befriends the Ox King, who trained with his grandfather under Master Roshi. In order to get the dragon ball, Goku is sent to find the Ox King's daughter Chi-Chi, and to obtain the Bansho fan from Roshi.