The episode focuses on Vegeta's desperate attempt to convince Whis to train him so he can finally surpass Goku.
Vegeta Becomes a Student?! Win Over Whis! - Dragon Ball Wiki
: Vegeta returns home to find Whis having lunch with Bulma. When he tries to force Whis to take him to Beerus, he senses a strange "nothingness" ki ( Ep.16 - Vegeta Becomes a Student! Win over Whis...
: Knowing Whis's love for Earth's cuisine, Vegeta attempts to win him over with food. He discovers that Bulma has already taken Whis to nearly every top-tier restaurant in the city.
: Vegeta eventually finds the one delicacy Bulma kept secret: Cup Ramen . Whis is so impressed by the flavor and convenience of the "instant" meal that he agrees to take Vegeta on as a student. The episode focuses on Vegeta's desperate attempt to
: They observe planets disappearing mysteriously, hinting at future threats.
In , titled "Vegeta Becomes a Student! Win over Whis!" (or "Vegeta Becomes an Apprentice?! Winning Whis Over!"), Vegeta humbles himself to seek divine training after realizing the gap between his power and the gods. Episode Summary - Dragon Ball Wiki : Vegeta returns home
) emanating from him. Whis then reveals that he is actually , which stuns Vegeta.