Dragonball Kai episode 31

Description : Son Goku Finally Arrives! Knock the Ginyu Special-Squad Around / Goku Arrives At Last! Take Down the Ginyu Force! Goku enters the battle after giving Senzu beans to Krillin, Gohan, and Vegeta, and things quickly take a turn for the better. Recoome, charging up a deadly attack, is defeated by a single blow from Goku. Jeice and Burter leap into battle trying a variety of techniques - none of which have the least bit of effect on Goku. Burter is knocked out by a few swift attacks from Goku, as Jeice stares in awe at his latest opponent - having never faced someone so powerful. Vegeta comes to suspect that Goku has become the first Super Saiyan in over 1000 years.