Watch Dragon Ball Z: The History of Trunks (1993) full movie.
Storyline: This TV Movie tells the story of “Future” Trunks; that is, the Trunks from the alternate future where Goku has died and Androids terrorize the Earth. Amongst other things, it shows how Gohan trained Trunks, their fights with the Androids, and what inspired Trunks to go time traveling.
Director: Yoshihiro Ueda
Writers: Neil Bligh, Akira Toriyama
Stars: Masako Nozawa, Mayumi Tanaka, Hiromi Tsuru…
More infor: IMDB