Dragon Ball Z Kai — S4 E1 - Cell on the Verge of Defeat! Krillin, Destroy Android 18!

Goku continues to train Gohan so he can become a Super Saiyan. Kuririn has found the Artificial Humans. Vegeta effortlessly overpowers Cell with the results of his training from the Room of Spirit and Time. Cell is furious that he hasn’t achieved his perfect form and gives Vegeta an offer to fully test his strength.