You must prove yourself a warrior so you can be trained to be a warrior...catch-22
Dragon Ball: Sleeping Princess in Devil's Castle (ドラゴンボール 魔神城のねむり姫, Doragon Bōru: Majin-Jō No Nemuri Hime) is the second animated feature film based on the Dragon Ball manga by Akira Toriyama. It was originally released in Japan on July 18, 1987 at the "Toei Manga Matsuri" film festival as part of a quadruple feature along with the original Saint Seiya movie and the film versions of Hikari Sentai Maskman and Choujinki Metalder. An English dub by Funimation was released on home video in 1997, though an alternative English dub was also released in Europe from AB Groupe sometime in the early 2000s.
Twelve year old Goku seeks out Master Roshi to ask to be accepted as a student, while the little monk, Krillin, arrives for the same reason (and uses a porno magazine as a bribe). Roshi sends them on a quest far to the west, where "five mountains stand, called the 'Devil's Hand'." Inside a castle, there lies the legendary, and beautiful, "Sleeping Princess." Whoever brings back the Sleeping...