Dragon Ball Z Episode 163: Saving Throw
Episode 163 of 291 of Dragon Ball Z, aired November 4, 1992, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Vegeta lies unconscious after an intense battle with Cell, and Trunks unleashes his hidden powers to save his father's life. With Goku and Gohan still training and the other fighters clearly out-leagued, Trunks is the only person standing in the evil android's way. Just how far can the young Saiyan's power go?