Dragon Ball Z1996

Goku:
Look, if we don't do something soon, we'll be history, along with whole planet.

Vegeta:
Why do I care?

Goku:
Wake up! Majin Buu's eaten everyone we care about! Everyone is gone - even Bulma!

[Vegeta gasps in shock and goes angry]

Goku:
They've become part of Buu! They can't even die! I just thought the least we could do is put our old differences aside, just this once, and really work together. We owe that to our teammates, our families, Vegeta. Our friends! Look, you've always talked about our Saiyan race, how we're the last of the mighty people. Well, it's time we accept we're starting a new race; one that can be just as strong, just as proud. But not if we're caught up in so much of our old birthrights to see what we have right in front of us! We've lost our old race, Vegeta! Let's not lose this one, too!

[Buu hears them]

Vegeta:
[stands up after a long pause] Kakarrot, how do you know this fusion will be enough to stop him?

Goku:
I don't know for sure, but I know it's the best chance we have of saving the Earth!