4x29 - Dragon Ball Z: Dragon Box

Cell closes in on the island where No. 16 and No. 18 are hiding, so that he can absorb No. 18 and achieve his perfect form. Just as it looks like Cell is about to gain his perfect form, a powered-up Vegeta arrives! Vegeta transforms to become a Super Saiyan, glowing with a golden color, and begins to unleash a ruthless attack on Cell. Vegeta's super power overwhelms Cell!!