He's a kid in dragon Ball. Starts with with the death of his grandfather Gohan, then Bulma come looking for the dragon balls. Goku inherited one from his grandfather. They team up and go around the world looking for them.
This is where he meets pretty much all the characters from DBZ. Krilin, Master Roshi, Tien, Yamcha, ChiChi (
@Chicity), etc.
Pretty much all the z force started out as Goku's enemies.
No one is super overpowered, it's more adventure driven then action driven. But there are good action scenes too. Feels more like a Kung Fu movie then a blockbuster.