Bojack Unbound Story

Note: This is based on the Funimation dub of the movie.

The richest man is holding an intergalactic tournament for his son's birthday.  Gohan, Krillin, Trunks, Piccolo, Yamcha, and Tien enter the tournament.  In the quarter finals Gohan faces a giant sumo wrestler, Future Trunks fights Yamcha, Krillin fighting Piccolo, and two nobodies fighting.  Gohan wins with ease, Trunks beats Tien, and Piccolo quits the tournament on the account that it was not challenging.  The final round is where the four fighters will go out to different places and fight aliens (these aliens are actually just normal fighters in costumes).  When they get there, the nobody winner and Krillin are beaten by real, ruthless aliens.  Trunks defeats his opponent, only to be soon attacked by the leader of the group, Bojack.  Gohan's fight is interrupted.  Vegeta sees what happens to his son, grabs Trunks's sword, and flies to join the fight.  Yamcha and Tien also head over to help.  Yamcha, Tien, and Super Saiyan Gohan try to fight Bojack and his team, but they all fail.  Even when Trunks and Krillin regain consciousness and rejoin the fight, they are still beaten.  Gohan is about to be killed but is saved by Piccolo.  Trunks is about to be killed but is saved by his father.  Even with all of these warriors fighting, they were no match for them.  Bojack starts choking Gohan, and Goku, who had been watching the whole fight on a television, asked King Kai if he could help his son, but King Kai shook his head no.  Seeing his son almost die, Goku breaks the rules and uses Instant Transmission to teleport to the battlefield and save his son.  Goku tells his son to fight with his emotions like he did with Cell.  Goku is forced to return to King Kai while Gohan turns into a Super Saiyan 2.  Gohan kills all of Bojack's team besides one.  The last one is killed by Bojack himself.  The two fight, and Gohan easily wins.  Trunks, Gohan, and Krillin start recovering in the hospital and everyone thinks that Mr. Satan had once again saved the world.  The ninth Dragonball Z movie ends.