"Having at last achieved his Perfect Form, the evil Cell's powers have soared to terrible new heights, overshadowing even the greatest of the Z-Fighters. Eager to demonstrate these newfound abilities and prove his superiority, Cell proposes a tournament. He issues an ultimatum to the people of Earth - produce a worthy opponent or die. Now, with the fate of the human race hanging in the balance, one valiant fighter must come forward to defeat the seemingly invincible Perfect Cell - but who will it be? Dragon Ball Z: Season Six contains episodes 166-194."