This is brief information for seesion 1 of DBZ.(season 2 to come)
Season 1
Radditiz arives. He tells Goku he's a Sayion. He takes Gohn and leaves. Piccilo arives and teams up with Goku. Piccolo kills Radditz and Goku. Goku goes to King Kia's and trians in the art of Kiaken. The people on Earth collect the dragon balls. Vegita and Napa arrive. Napa kills 4 ot of 7 of the Present Earth defenders. Goku arrives and deffeats Napa and lets Vegita go.