Androids Saga

After peace returns to Earth with the defeat of Freeza, a new danger approaches. A mysterious young man called Trunks appears from the future and warns Goku and the Z Warriors about the imminent arrival of two powerful androids created by the scientist Dr. Gero, a former member of the Red Ribbon Force who seeks revenge against Goku. The androids called 17 and 18 wiped out almost all of humanity in Trunks' future.