The Galaxy's in Danger! The Super Awesome Guy!

Summary-

The Money Family is hosting a Tenkaichi Budoukai as a birthday present for 10-year old Dollar Money. Dollar is hoping for aliens to come from space and join in the tournament, so four of Mr. Satan's pro wrestling students are in costume as the "aliens" in the final rounds of the competition. King Kai and Goku are on King Kais planet (King Kai is watching the game on TV, Goku is playing Go Fish against Bubbles the ape -- the deck has Uranai Baba and Pilaf's crew on the face cards.) The elimination rounds are basically 8 batches of free-for-alls; the last person standing in each free-for-all goes on to a one-on-one round.

The final four each get a shot into one of four "Battle Stages" to face Satan's "aliens." The first person to emerge from the Battle Stage wins the 100,000,000 zenny prize money, a trip to a hot spa, and a chance to fight Satan. During the free-for-alls Yamcha is knocked off of the stage into the water when a tower he is sleeping on falls over. In the semi-finals Krillin fights Piccolo but Piccolo flies away. Gohan faces a Udou the huge wrestler but defeats him with one punch. Then the large sumo wrestler Dosukoi defeats his opponent. Krillin, Future Trunks, teenaged Gohan, and Dosukoi make it to the Battle Zones, where they are attacked by real aliens (Satan's students have already been killed.)

Krillin is attacked by Zangya and is knocked unconscious. Dosukoi is killed by Bidou. Future Trunks easily kills Gokua with one punch after going Super Saiyan but is knocked unconscious by Bidou. After witnessing all of this on T.V. Vegeta rushes there to help. Meanwhile after fighting with Pujin Gohan is led to a desolate city where he finds Krillin and Future Truks lying unconscious and is introduced to Bojack and the rest of his men. King Kai realizes that the aliens are Bojack's team.

A long time ago, the four Kaioshins had battled Bojack, and imprisoned him in King Kai’s planet. Bojack escaped when the planet exploded, and came to Earth to destroy it and kill Gohan as revenge on King Kai, knowing that Goku is King Kai's student, Gohan is Goku's kid, and Earth is Goku's planet. Tien and Yamcha show up and try to fight with Bojack’s men but are easily defeated all of this makes Gohan mad and he goes Super Saiyan. After failing to be able to do much damage to Bojack and his team Gohan is knocked down and is about to be hit with an energy ball till Piccolo deflects it with a Makankosappo. After battling with Bojack and his men Piccolo realizes he too is not a match for them. This is when Future Trunks awakens and attempts to return to the fray but is binded by Pujin and is nearly speared by Bidou till he is set free and from out of nowhere is thrown his sword. All of the sudden we see Vegeta appear and he and Future Trunks together are still no match for them. This is when Gohan tries it again and he does better till Bojack gets in on it and begins to strangle him. He almost crushes his neck when Goku decides he can’t sit by and watch any longer, which is when he teleports in and punches Bojack right in the kisser.

He carries Gohan to the ground and tells him not to hold back his true power and show them everything he had. This is what fires him up and when Pujin and Bidou surround him his anger explodes and he goes Super Saiyan Two. With his awesome power he backhands Bidou in half and kicks Pujin in half. He then begins to approach Bojack who in a last ditch effort shoots a beam right through Zangya to try and catch Gohan off guard but it doesn’t work. Gohan punches him right through the stomach but he still doesn’t give up. Finally when Bojack tries to use a huge ki blast to kill Gohan, but he blocks. Bojack is then killed by a giant Kamehameha from Gohan. In the end Gohan tells everyone how Goku came back with his inspiring words to help him win.