Goku and Gohan in “Unfinished Business”

Gohan! It's time! Piccolo is our only chance of bringing the others back to this dimension. Take him to the ship and go!

But what about you?

Don't worry about me now! I know I'm where I need to be!

But...if we take the ship...that means you'll be stranded out here with no way home.

I'm your father. Now listen! Gohan! Just do as I say!

Whatever you want dad.