These are only the Sagas from Dragonball Z. Because im not positive on what happend in Dragonball or Dragonball Grand Tour.

The first saga in Dragonball Z is the Saiyan Saga. This is when Goku's evil brother Raditz comes to planet Earth to find his baby brother and also so that he can clear it out and sell it. When he gets there he locks onto a high power level with his scouter. He follows the powerlevel and when he gets there he finds Piccolo. Piccolo tries to shoot Raditz with a powerful blast, but to no avail Raditz isn't even hurt by it. In retailiation Raditz was going to kill Piccolo until he got another reading on his scouter. A little bit stronger then Piccolo. It's Goku, so Raditz decides to spare Piccolo and go after Goku. Goku is meating up at Master Roshi's house with Bulma Krillan and Master Roshi of course. He brings his son Gohan along with him also to meet all of his friends. Raditz arives to spoil the party, he tells Goku that Goku is from another planet, called Vegeta and that he is a Saiyan. He asks Goku to come with him and join the rest of the Saiyans and take over the universe. Goku of course refuses saying that he has everything he ever wanted on Earth. So Raditz decides to take Gohan back with him in that Gohan is a Saiyan himself. After Raditz leaves Goku, Krillan, and Master Roshi get ready to go and fight Raditz, when Piccolo shows up. Piccolo and Goku decide to team up to fight Raditz. Raditz is in disbelief that they come to fight him but decides to kill them anyway. Goku and Piccolo take off their weighted clothing and fight very hard against Raditz but he is to strong, plus he took of Piccolo's arm. Goku grabs Raditz tail and tells piccolo to shoot Raditz. Piccolo charges up the Special Beam Cannon. But Radtiz begs for his life so Goku lets go. . . And of course Goku pays for this by getting the crap beaten out of him. While he's getting beaten to smitherines, Gohan goes crazy and destroys Raditz space pod and attacks Raditz breaking his armor. Raditz realizes that this kid could be trouble and is about to kill him when Goku jumps on hims back and holds him again and tells Piccolo to shoot him. Piccolo does but shoots right through Raditz and then through Goku, killing them both. Raditz with his last ounce of strength tells them that two other Saiyans much stronger then he is will arive 2 years and avenge him. Piccolo then regrows his arm and kidnaps Gohan. He says that he is going to develop his powers because he would be useful against the Saiyans. The next day Krillan travels to Chi Chi's to tell her the news about Goku and Gohan, but doesn't have the heart to tell her. So he goes back to Master Roshi's. But Chi Chi follows him and there they tell her what happend. While they are talking Yajirobi shows up and tells Krillan to find Yamcha and report to Kami's lookout to recieve special training for when the Saiyans come. So the next day Krillan Finds Yamcha and they go to Kamis tower, there they find Tien and Chaouzou. Meanwhile in the afterlife Goku is traveling down snake way to recieve special training from the great King Kai so that he can beat the Saiyans. And Gohan trained under Piccolo. Master Roshi and the others get the Dragonballs and wish Goku back to life. Goku has to travel back down snake way though. While he is going, the battle starts. First Nappa plants 6 seeds that grow almost instantly, they are 6 little men called Saibai men. Piccolo, Krillan and Gohan are the only ones there right then. Piccolo and Krillan spar off against the Saibai men Gohan doesn't because he is to scared. During the fight Tien and Chaozou show up, then Yamcha. Since it is now 6 on 6 they decide to go 1 on 1 matches. Tien goes first and kills one with ease. Then Yamcha decides to take a shot. He wins but while his back is turned the Saibai man that they thought was dead jumps onto his back and explodes killing them both. After this Krillan goes crazy and shoots a shot that explodes into other shots that hit each Saibai man killing each and also one that the Saiyans. The Earth's special forces believe they have won but when the smoke clears the Saiyans don't even have a scratch on them. One of the Saibai men is still alive and attacks Gohan, Piccolo grabs it and kills it. Then Nappa decides that he is going to put an end to this. He attacks Tien first and knocks off his arm. Then Chaozou jumps on his back and explodes killing himself. But does no damage to Nappa. Tien then goes crazy and attacks Nappa. Tien gets beaten around for a while, Piccolo and the others alow this to happen for a while until Piccolo and Krillan intervine, they told Gohan to shoot him when the time comes. As Nappa is about to finish Tien off Piccolo punches Nappa in the face twords Krillan who knocks Nappa down to the ground twords Gohan. They scream at Gohan to shoot Nappa, but Gohan freezes up because he is scared(if he had shot Nappa would have died and who knows what the rest of the series would have been like, stupid little kid). Krillan and Piccolo both shoot down at him but Nappa gets out of the way. So Krillan and Piccolo square off against Nappa. In the mean time Tien who is baddly hurt musters up enough strenth to shoot one final Tribeam at Nappa. while Nappa is destracted fighting Krillan and Piccolo, the blast comes out of nowhere and hits Nappa head on. This hurts Nappa but doesn't kill him. this shot used up Tiens last ounce of strenth and Tien dies. Krillan and Piccolo then use the triform technique to fight Nappa but to no avail, so Piccolo decides to take the battle down tot he ground. Vegeta(the other Saiyan) tells them to wait until Kakorot(Goku) arives because it will be a much better fight, they wait for 3 hours but still no Goku. so they start up again, Piccolo gets an idea, he decides that Krillan will go and attack Nappa then Piccolo will go behind him and grab his tail, and then Gohan will have to shoot Nappa while he is at Piccolos mercy. It goes well Krillan attacks and gets out of the way and Piccolo snags his tail, and even Gohan was about to finish Nappa off, until......BAM Nappa levles Piccolo. Vegeta explains that he and Nappa had overcome the tail weakness, and Piccolo is KOed. Nappa then goes after Gohan but Krillan uppercuts Nappa and flips away, Nappa gets pretty angry and charges after Krillan. Krillan charges his special attack, the Destructo Disk. He throws the unstoppable Disk of Destruction at Nappa. Nappa was going to try to block it until Vegeta told him not to because it would cut him in half(yet another time Nappa should have died, but didn't because of crappy stuff.) But the shot did graze Nappas face scaring him. Nappa got pretty angry and shot at Krillan, who dodged it but got caught in the explosion, he got torn up pretty bad. Nappa was about to finish him off with another shot, but from behind Piccolo shot Nappa. Then suddenly Piccolo felt a huge power........Goku. Nappa said he was bluffing and told Vegeta to check it out on his scouter. Vegeta said got a very cold scared look on his face, Nappa asked him what was up and Vegeta said" this can't be.....you see my scouter reads a power level of 5,000..........quickly finish all three of them off with Kakorot here things could get intense." He realized that they could get more Dragonballs on Namek. Gohan told Piccolo to leave because without him they couldn't use the Dragon balls, he said he could take Nappa on his own :). Nappa replied "just for that, you're next." and took off after him. Nappa let loose a huge shot straight for the kid(who decided to sit there rather then get out of the way) Piccolo jumped in front of the shot and took it head on for Gohan. Piccolo was baddly hurt bust still standing after the shot passed. He siad there that wasn't so bad then fell over and died. Then Gohan snapped and shot a blast at Nappa who cought it, and went to kill Gohan but suddenly Gohan was on Nimbus and behind Nappa was.....Goku. Goku gave Gohan a senzu bean and one to Krillan. then he squared off against Nappa. Goku was beating Nappa so Vegeta told Nappa to stop. So Nappa went and attacked Gohan and Krillan. Goku went to help and used the Kaio Ken attack to make himself stronger he punches Nappa in the back and flew below and cought him and tossed him to Vegeta and said "You should take him to a doctor." Vegeta then gave Nappa a hand to help him up and thew him into the air and shot him and said "Maybe you wont be sucha disapointment....in the next dimension." and killed him. then goku made Krillan and Gohan leave. Vegeta asked Goku to join him, but Goku declined. So they squared off, at first Vegeta had the upper hand beating the living crap out of Goku. Then Goku used Kaio Ken. Then Goku started to beat the crap out of Vegeta. Until Vegeta stopped him. then Goku used Kaio Kenx2 and really started to kick ass. Vegeta got pretty angry and Charged up a Gallet Gun that would ether kill Goku or destroy the planet. Goku used Kaio Kenx3 and shot a Kamehameha Wave up at Vegeta, the two blasts were dead locked and nothing was moving, until Goku screamed "KAIOKEN ATTACK.......X4!!!!!!." then a huge burst of energy went through the beam and engulfed Vegetas and vegeta himself. Vegeta got carried on the beam for a while, but got off and was hurt pretty bad. He was pretty angry, yet again. So he used the Moon ball and transformed into a Giant Ape, Goku used the Solar Flare and blinded Vegeta, and went to Charge up the Spirit Bomb. Just as Goku was about to throw it Vegeta came and hit him, and grabed Goku and started to break all the bones in his body. At this point Krillan and Gohan had started their way back to the battle field. They got there just in time to. Gohan went to destract Vegeta while Krillan used a Destructo Disk to cut off his tail. Vegeta heard Krillan and Jumped the beam. Vegeta then started to break Goku's neck, when all of a sudden. His tail came off, and the unlikly hero YAJIROBI! had cut it off with his sword. Yajirobi then ran off. Vegeta shrunk back down, and started to go 1 on 1 against Gohan. Gohan was doing well, and Goku gave Krillan the energy from the Spirit Bomb. Krillan waited until the time was right to throw it but Vegeta managed to dodge it, as it went straight for Gohan. Gohan deflected the shot back at Vegeta, it Exploded and sent Vegeta in a huge explosion. Everyone was happy and everything, but then to no suprise Vegeta came back and boy was he in a good mood. He let a huge burst of energy that knocked everyone over. He went over to Gohan to finish him off but again, the unlikly hero Yajirobi slashed Vegeta in the back. Vegeta then beat the crap out of Yajirobi and went back to Gohan. He relized that Gohan had a tail, and Gohan looked at the Moon ball and started to transform. Vegeta was in big trouble and got his ass kicked by a big monkey. Until he shot Gohan who fell over then Vegeta cut his tail off but Gohan fell on vegeta who was unable to get out of the way and was crushed. Vegeta then crawled back to his ship and started off back home, Krillan was about to kill Vegeta but Goku told him not to. Vegeta promised that would be a mistake and took off. Then Master Roshi came and took everyone to a hospital. End of the Saiyan Saga.