The Red Ribbon saga starts just as Goku is looking for his four star dragonball, a military organization is trying to reunite the seven dragonballs. Once again, evil is trying to take over the world, this time it is the Red Ribbon Army. Goku has been all over the world now searching for that dragonball that his grandpa had given him. Goku is able to anihilate the army to get his dragonball back.
In this saga, we meet many new characters, some are good like Gora and Upa (the two little indians that protect Karin Tower), Sho (a girl who lives in the mountains), Number 8 (a robot made by Dr. Gero), Bulma's parents (Dr. Briefs and Mrs. Briefs), Karin (the cat that lives on Karin Tower), and the ones that live in the Penguin Village (Arale, Obotchaman, Dr. Slump, Midori, Turbo, and more).
Just as well, there are also bad guys like the leaders of the Red Ribbon Army (Silver, Violet, and Yellow), Dr. Gero (the scientist), the Sergents (Blue and White), and the main guy of the Red Ribbon Army, Red Sosvy, his assistant Black, Tao Pai Pai (the world's greatest assasin), and the ninja Murasaki.
Tao Pai Pai had killed Upa's father, so Goku vows revenge and gets it. He makes Tao Pai Pai fall for his own trick and so Tao Pai Pai explodes with his own granade. After destroying him and most of the Red Ribbon Army, Goku decides to revive Upa's father and he finds himself with the problem of not finding one of the dragonballs. He unites with Uranai Baba (the sister of Master Roshi, who is a witch) so that she can look into her magic ball and tell them where the last dragonball is located. Since they had no money, Goku had to fight against some ghosts for Baba in return for her services. These ghost are Dracula Man, Tomein Ningen (the invisible man), Miira (the mummy), Ackman (the devil), and Son Gohan (Goku's grandfather). After defeating all of them, Goku finds out that Pilaf has the last dragonball, in which Goku would have no problem getting. After bringing Bora, Upa's father, back to life, Goku decides to go around and world and try to better his skills.
Once again the best fighters in the world are united at the 22nd Tenkaichi Budokai Tournament. Here, we meet two fighters, Tenshinhan and Chaozu (who are students of Tsuru Sennin, the brother of Tao Pai Pai), who, at first, are enemies of Goku, but after the tournament become good friends. The final fights include Goku vs. Krillin (Goku wins), Jackie Chun (Master Roshi in disguise) vs. Tenshinhan (Jackie Chun intentionally loses). So the final match is between Goku and Tenshinhan, after a long match, Tenshinhan barely wins. The celebrating does not last long, because Krillin is killed.