In his laboratory, biotechnology expert Dr. Kochin gathers the dragon balls intending to free his master Dr. Uirou, a mad scientist hellbent on ruling the world, forever frozen in the never-melting ice of the Tsurumai-Tsuburi Mountains. Attempting to locate the dragon balls, Gohan Son and Oolong arrive at the scene and are ambushed by several creatures known as "Bio-Men." Training nearby, Piccolo attempts to save them but is then attacked by three mysterious warriors. When the ice beneath them breaks, it cuts their altercation short, burying Gohan and Oolong within.

After regaining consciousness, they return home to Kame House only to encounter Bio-Men, demanding Muten-Roushi to follow them. Refusing, he easily defeats the creatures, piquing Dr. Kochin's interest. Under the impression of Muten-Roushi being the strongest man in the world, Dr. Kochin takes Bulma hostage, forcing Roushi's agreement to accompany him in mysterious plans involving his master. Who are Dr. Kochin and Dr. Uirou? What even is their purpose?

[Written by MAL Rewrite]

A mysterious device crashes on planet Earth, causing a wildfire near where Gohan Son, Kuririn, Bulma, and Oolong are camping. Unable to fully save the forest, they decide to use the Dragon Balls to restore it to its previous condition. A few days later, a group of unknown warriors plant a seed where the mysterious device had crashed, sprouting a colossal tree that destroys the forest and neighboring cities in the process.

North Kaio contacts Gokuu Son and tells him that this tree is the "Shinseiju"—a tree that absorbs all the nutrients in the planet and leaves it a barren wasteland, all the while growing a mighty fruit capable of providing incredible power to anyone who eats it. After learning of this, Gokuu and his friends try destroying the tree before it is too late, but that may prove to be more difficult than they had previously imagined.

[Written by MAL Rewrite]

Gohan Son and Piccolo are peacefully playing when they sense a powerful entity approaching Earth. It soon reaches everyone's ears that this entity is in fact a small planet on a deadly collision course with Earth. Gokuu Son and Kuririn attempt to change the small planet's path with a Kamehameha, but the attack fails and the two warriors are blown away. However, after coming very close to Earth's surface, the object changes direction on its own and explodes soon after.

The small planet reveals itself to be a vehicle for what seems to be a castle. A large army emerges out of the structure and declares that the planet is now in possession of Slug, king of the universe. While defending the city against the invaders' attack, Gohan loses his Dragon Ball, allowing Slug to take it. After reading Bulma's mind and stealing her Dragon Radar, Slug commands his army to collect the wish-granting relics. With the Dragon Balls in his possession, he uses them to wish his youth back. Now young, wise, and very powerful, Slug commences world domination.

[Written by MAL Rewrite]

Gokuu Son and his friends are out camping when three mysterious enemies ambush them. After a quick fight, a fourth enemy named Cooler joins the fray. Seeking retribution for his younger brother Frieza after he was defeated, Cooler attacks Gokuu; however, the latter manages to escape with Gohan Son and goes into hiding. Unsatisfied and infuriated with the outcome, Cooler and his men begin the hunt to uncover Gokuu's location and kill him to carry out their plans of exacting revenge.

[Written by MAL Rewrite]