Dragon Ball (3-in-1 Edition) Vol. 28-30 (manga)

Trunks, a mysterious warrior from the future, has arrived to warn Son Goku of a horrendous menace that could destroy the universe. Dr. Gero, the diaboical genius of the Red Ribbon Army, has constructed androids designed to defeat Goku and take over the world. Goku must locate an destroy these androids before they're activated, or face certain doom!