Dragon Ball Z Kai (2009)

S4E1 Cell on the Verge of Defeat! Krillin, Destroy Android 18!

Goku keeps pushing Gohan in his Super Saiyan training, determined to unlock his full potential. Meanwhile, Kuririn finally tracks down the Artificial Humans. Vegeta emerges from the Room of Spirit and Time and easily dominates Cell, showcasing the immense power he’s gained. Frustrated that he still hasn't reached his perfect form, Cell makes Vegeta an offer—let him fully evolve so Vegeta can face a true challenge.