: To ensure Frieza cannot gather all seven balls, Vegeta hides his newly acquired Dragon Ball at the bottom of a nearby lake. He knows Frieza cannot detect power levels without a scouter and won't find it there. The Fallen Warriors Arrive at King Kai’s
Welcomes the fallen Z-Fighters and facilitates communication with Goku. Dragon Ball Z Episode 51
Continues training at 20x gravity; learns his friends reached King Kai. : To ensure Frieza cannot gather all seven