Gohan's Metamorphosis - DragonBall Z
After Goku's death and after that Piccolo has revealed the secret about the seven dragon spheres the planet Earth is again threatened by the friends of Raditz which are supposed to reach the planet earth within a year so.
Goku is already gone, and Piccolo and the others have only one year to organize and save the Earth when the two Saiyans will arrive. They need everyone's help including Gohan who revealed an incredible power.
Piccolo decides that Gohan needs a special training and that he needs to know his own powers, he decides to abandon Gohan in the middle of nowhere so his survival instinct can reveal him the real power he has. It is important to have another saiyan on their side for this important battle, and Gohan needs to learn how to fight to help his father and the others to save the planet Earth.
