Black Day for the Planet Earth

Goku completes his training under King Kai and is ready for the battle against the Saiyans. While Goku hurries back on the Snake Way to earth,the evil Saiyans, Nappa and Vegeta, finally land on earth and launch a diabolical wake-up call for the planet. they first sense the power of Piccolo and Gohan and proceed to them. their purpose is to find the Dragon Balls and make their wish -- immortality. can earth`s special forces hold out until Goku arrives?!