Gohan Returns
Everyone that has been killed by Frieza and his henchmen on Namek are resurrected, but so far, Guru isn't back yet and it looks like Goku has been beaten by Frieza's attack. To avenge his father, Gohan returns to the battle to make sure the cold tyrant blows up with the planet, but how long can he last?
Aired 24/07/1991EP 100 - Gohan Returns

1989
Dragon Ball Z
Goku is back with his new son, Gohan, but just when things are getting settled down, the adventures continue. Whether he is facing enemies such as Freeza, Cell, or Boo, Goku is proven to be an elite of his own and discovers his race, Saiyan. He meets many new people, gaining allies as well as enemies, as he still finds time to raise a family and be the happy-go-lucky Saiyan he is.
(Source: Anime News Network)