Other source:
Anxious to find 18, the heartless Cell obliterates a chain of inhabited islands, with each explosion bringing him closer to the Android's hideout. Vegeta, anxious to test his new power, heads towards Cell's whereabouts. Just as Cell is about to destroy the last island, Vegeta arrives to fight Cell. Up on Kami's lookout, Tien and Piccolo don't believe that Vegeta has the power to beat Cell, and neither does Android 18, based on the fact that she beat Vegeta in their fight. As Vegeta begins to power up, he begins his transformation, which stuns everybody that senses his power, including Android 18 and Cell. Vegeta finishes transforming, reaching an ascended level of Super Saiyan, and begins the fight by delivering the first hit to Cell.
