Dragon Ball Z: Bio-Broly

In a secret laboratory, humanoids emerge from tanks after being created by Dr. Collie. Mr. Jaguar, the employer, plans to use them to expose the world's greatest fraud, laughing as a muscular, nude man with a tail lies dormant in another tank. This event marks the start of the island scheme.

Android 18 harasses Mr. Satan, demanding payment for losing on purpose at the World Martial Arts Tournament. Men-Men arrives and explains that Jaguar wants Mr. Satan on his island to fight his bio-warriors, threatening to expose him if he refuses. Android 18 agrees to accompany them to ensure payment, while Trunks, Goten, and Marron wait outside.

Mr. Satan reluctantly accepts the invitation and travels to Jaguar's island to face the bio-warriors. Android 18 accompanies him to ensure payment is honored. Trunks and Goten secretly stow away, hoping for a real challenge.

On the island, a tournament is organized to pit Jaguar's bio-warriors against Mr. Satan. Android 18, Goten, and Trunks request to participate by posing as pupils, slipping into the contest. Goten and Trunks easily defeat several bio-warriors and notice an excommunicated shaman from the village.

Goten and Trunks explore the island's lab and discover a tank housing Broly, who is supposed to be dead. The shaman reveals that a sample of the Legendary Super Saiyan's blood was used to create a clone for Jaguar. They realize the danger of the bio-weapon and try to disrupt it.

The shaman explains the clone's creation and warns of the bio-fluid that leaks from the lab during battle. Goten and Trunks attempt to destroy the clone, but it breaks free and launches an attack. The struggle triggers a massive release of dangerous bio-fluid that devours matter around them.

Bio-Broly receives an order to kill Mr. Satan; Android 18 makes a valiant attempt to protect him but is eventually defeated by the bio-monster. The immediate danger forces the heroes to retreat and regroup.

Goten and Trunks engage Bio-Broly in a brutal fight while the bio-fluid continues to devastate the island facility. The onslaught relentlessly tests the young Saiyans as more of Jaguar's fighters fall around them.

Krillin arrives to aid Android 18 and manages to pull her away from Bio-Broly, saving her from a finishing blow. He is quickly defeated by Bio-Broly, but Android 18 survives the encounter.

Trunks lures Bio-Broly under a bio-fluid tank and destroys the tank, splashing Bio-Broly with more bio-fluid. The creature seems to dissolve briefly but instead merges with the fluid and re-emerges as a giant head before vanishing again.

Dr. Collie warns that the bio-fluid could spread across Earth unless stopped. The heroes discover that the fluid hardens into stone upon contact with seawater, offering a potential solution to end the threat.

Goten, Trunks, and Krillin unleash a combined Kamehameha at the base of the island, flooding it with seawater. The bio-fluid turns to stone, and a gigantic Bio-Broly rises from the sea only to solidify and be destroyed by another blast.

In the Other World, Goku receives orders from King Kai to help Pikkon stop Broly, who has been allowed to keep his physical body and is rampaging in Hell. The confrontation ties into the larger cosmic conflict beyond Earth.