The story begins with a World Martial Arts Tournament where Goku, Gohan, Vegeta, Trunks, and the rest of the Z Fighters participate. The tournament is interrupted by the arrival of a powerful alien named Bojack and his crew. Bojack was sealed away by the four Kais in the past, but their imprisonment is inadvertently broken by a powerful lightning storm. Now free, Bojack seeks to conquer the universe and exact his revenge on those who sealed him away.
The Z Fighters are initially caught off guard by Bojack and his henchmen’s strength. Goku, who was recently killed in the battle against Cell, is unable to participate. However, Gohan steps up to the challenge, unleashing his latent power as a Super Saiyan 2. He engages in an intense battle against Bojack’s minions while the other Z Fighters join in the fight.
Throughout the movie, the Z Fighters face numerous hurdles as they struggle to overpower Bojack’s team. Piccolo, Tien, Krillin, and Yamcha face off against Zangya, Bido, Kogu, and Bujin respectively, engaging in fierce battles to protect Earth from Bojack’s ruthless reign. Meanwhile, Gohan confronts Bojack himself in an epic showdown.
As the battles unfold, Gohan taps into his immense power, pushing his limits as a Super Saiyan 2. His father’s spirit appears to support him, allowing him to reach new heights. With each passing moment, Gohan grows stronger, ultimately overpowering Bojack and delivering a devastating final blow.