Dragon Ball Z - Episode 4 2/2

Goku and Piccolo throw everything they've got against Raditz, but it seems that even their combined power stops short of Raditz's own strength. However, Piccolo has an idea that might beat him: the Special Beam Cannon, his newest and most powerful technique. But, he has to power up to make it work. He requires five minutes to gather the strength, and Goku does his best to give him that.