Saiya-jin Saga
episodes 1-37 | total #37
This is the first saga of DBZ and begins with Goku's brother Radditz and ends with Vegeta getting defeated by the Z warriors.

Freeza Saga
episodes 38-107 | total #69
The second and probably the longest saga in DBZ where krillin, Gohan, Bulma, Piccolo and Goku go to Namek to fight the Strongest Villian, Freeza, in the Universe.


Garlic Jr. Saga
episodes 108-117 | total #9
This is a short saga that did not show up in the manga. This Saga goes along with the first DBZ movie.


Trunks Saga
episodes 118-125 | total #7
Freeza comes back in this saga for revenge and right when Goku was about to take care of it Trunks comes from the future to destory Freeza and his Cold blooded father. When Goku arrives he meets Trunks and Trunks explains to Goku that one of his past enimies, Dr. Gero, is creating evil Andriods to destory the world, so Goku and the rest of the gang do all they can to prepare.


Android Saga
episodes 126-140 | total #14
This saga introduces Andriod #19 and #20 then we find out that they are not the Andriods that Trunks was talking about. Bulma gets a quick glance at Andriod #20 and realizes it is Dr. Gero. Then she informs the Z warriors about it and they go to search for #20 in the forest and they get there too late. Android #17 and #18 are already activated.


Cell Games
episodes 141-194 | total #53
This saga is the ultimate battle for the earth Goku first trys to attempt defeating cell, but as he predicted Cell was much stronger. To everyones surprise Gohan was the next runner up to defeat Cell at first things looked grim, but Andriod #16 helped Gohan release his fury and Cell desperately tries to fight Gohan. Soon Gohan had proven that Cell was no match for him whatsoever and knock Andriod #18 out from his stomach. As Cell's last attempt he self-detonate himself, so Goku teleports Cell to King Kia's planet and their all blown. Cell somehow manages to survive the blast and he learns Goku's teleport technique so he comes back and kills trunks. Vegeta blames his son's death on Goku then goes all out on Cell by shooting energy balls at him and Cell comes out from the smoke and hits Vegeta onto the ground. Cell charges up to kill Vegeta and he shoots the energy beam but Gohan gets in the way and breaks his arm trying to save Vegeta. Vegeta realizes he put Gohan in a worst predicament, so he apologizes to Gohan. Cell charges the Ultimate Kamehamaha and fires it at Gohan and Gohan strugles to match it and eventaully Gohan overwhelmes Cell with a huge blast.


Afterlife Tournament
episodes 195-199 | total #4
Goku's adventure never ends. In this really short saga it shows Goku having the time of his life and he gets to meet Grand Kia. To prove who is the strongest the Grand Kia holds a tournament for Pikkon and Goku and Goku wins.


Great Saiyaman Saga
episodes 200-209 | total #9
Gohan goes to High School. Bulma makes Gohan a disguise to keep his identity a secret from his classmates, but Videl sees through the disguise and realizes it is Gohan. Also Goten and (small)trunks is introduced for the first time in this saga.


World Tournament
episodes 210-229 | total #19
This saga is a showdown of which Z Warrior is the strongest, but before that can be determined some Zombies interfere.


Buu Saga
episodes 230-291 | total #61
The last saga of dbz is about Majin Buu, he has more forms than all the other bad guys. Kid Buu is the strongest and he destorys the earth. Vegeta and Goku Survives and is the Universe's last hope, so they wish back earth and they collect energy from the people on earth for a spirit bomb to kill him.