Goku's Special Technique

Goku explains to the others how he survived Namek's destruction, saying he managed to get to a Ginyu Force space pod and crashed on another planet. There, the inhabitants nursed Goku back to health and taught him a new technique: the Instant Transmission. As for Trunks warning about the future, Piccolo (having heard everything because of his good ears) says everyone must decide whether they're going to fight or not now. They all agree to fight and begin training.