Four years later, Goku attains the power of a god and faces more challenges, defends the Earth against powerful destructive deities and travels to parallel universes to face more powerful opponents and nearly unstoppable foes.
Goku attains the power of a god. This is four years later. Goku faces more challenges. This is four years later. Goku defends the Earth against powerful destructive deities. This is four years later. Goku travels to parallel universes to face more powerful opponents. This is four years later. Goku travels to parallel universes to face nearly unstoppable foes. This is four years later.