Done with collecting the Dragon Balls, Goku heads to the Turtle Hermit’s place to receive training! However, in order to become the Turtle Hermit’s pupil, the fee is to bring a pichi-pichi gal!! At the same time, a person comes from across the sea. The boy, who calls himself Kuririn, came in order to become the Turtle Hermit’s pupil, just like Goku! In order to be received as a pupil, Kuririn presents a large stash of porn magazines that he brought. Will he manage to safely become a pupil…?!

Goku and Kuririn set out in search of a pichi-pichi gal, the fee for becoming a pupil of the Turtle Hermit. Saving Lunch, a girl who was pursued by the police, they immediately bring her to the Turtle Hermit’s place! Having passed the test, Goku and Kuririn are recognized as the Turtle Hermit’s pupils!! But it turns out that Lunch is an incredibly peculiar girl with two personalities, and becomes either violent or peaceful each time she sneezes!!

Moving to a large island, the Turtle Hermit begins the training. First, in order to learn Goku and Kuririn’s ability, he measures how fast they can run 100 meters. The two look promising, and the Turtle Hermit gives them some training before dinner. It’s a great trial where he throws a stone with the “turtle” mark on it into the jungle, then tells the two to find it! The person who doesn’t manage to find it will go without dinner! Goku and Kuririn take this severe training in earnest!! The sly Kuririn seizes victory in this contest!

The basic training finally begins! To start off, Goku and Kuririn are given milk delivery as their early morning training! Carrying the milk boxes, they do things like skip and zig-zag around rows of trees!! Furthermore, they climb stone stairs that rise high into the air, cross over a valley on a large tree, cross through a desert of quicksand and a raging river while keeping their balance, and get chased by dinosaurs as a bonus! This is their ultra-hard milk delivery training that surpasses ordinary knowledge!!

With their early morning training over, they continue on to their morning training. In order to strengthen their arms and legs, they train by plowing a field barehanded! After breakfast it’s study time!! After lunch, they take an afternoon nap until 1:30. During the afternoon they help out with construction work. It’s training where they sweat, toughen their muscles, and even receive a part-time job salary! Furthermore, they carry themselves through rough training to toughen their reflexes, swimming ten laps around a lake while being chased by sharks and dodging the frenzied attacks of bees, to finally end a full day of training!

Goku and Kuririn continue their training by wearing 40 kg shells on their back! The two are aiming for the Tenkaichi Budokai, which opens in a month!! The day before the tournament, the Turtle Hermit takes them to the island where it will be held! At the tournament registration area, Goku reunites with Yamcha, Bulma, Oolong, and Pu’er. Goku is delighted when he learns that Yamcha is also participating! The next day, the Tenkaichi Budokai is at last decided!!

The Tenkaichi Budokai is held once every five years! A mere eight people are able to participate in the tournament’s main event! The preliminaries to select those eight people are divided up into four blocks!! Goku and Kuririn fully display the results of the harsh training that they received from the Turtle Hermit!! Tossing a veteran to his defeat, Goku splendidly gains the right to participate in the main event! What’s more, Yamcha also advances well, and wins his ticket to the Tenkaichi Budokai main event!!

The first round of the Tenkaichi Budokai main event is Kuririn vs. Bacterian! Bacterian is a formidable opponent who uses his filth as a weapon, with his foul smell paralyzing his opponents. With bad breath, farts, and the like, he assaults Kuririn with foul-smelling attacks!! The helpless Kuririn is finally downed!! At that time, Kuririn awakens from this nightmare of smells when Goku tells him “You don’t have a nose!” Launching a fierce counterattack against Bacterian, Kuririn breaks through the first round!

It’s the second match, Yamcha vs Jackie Chun! The mysterious old man Jackie Chun defies Yamcha’s rapid attacks, and breaks through even his special attack, the Roga fufu-ken (Wolf Fang Gale Fist)!! Furthermore, Jackie seizes victory by raising a wind with a swing of his left hand, blowing Yamcha out of bounds! In the third match, the serious Namu is assaulted by Ran-Fan’s sex appeal strategy!! But Namu achieves a turnabout victory when he defeats Ran-Fan with a single blow after freeing himself from distracting thoughts!

At last it’s Goku’s turn! The one facing Goku in the fourth match was the powerful opponent Giran!! Goku is knocked around by Giran’s stream of unfair attacks! Giran traps Goku in the rubbery Guru-Guru Gum that he shoots from his mouth!! Goku is in an absolutely desperate pinch! Just as he is about to be thrown out of the ring, his chopped-off tail suddenly grows back, and his power multiplies! Seeing this, Giran surrenders!!

The fifth match is the semi-finals fight, Kuririn vs. Jackie Chun. Kuririn and Jackie’s battle unfolds at ultra-fast speed that the eye can’t follow!! The spectators who came to watch the Tenkaichi Budokai are extremely excited by the pair’s high level battle!! Kuririn puts up a good fight against Jackie, but he rushes to win! Because of this, he is hit by Jackie’s karate chops after Jackie goes around behind his back, and is downed!! Sadly, Kuririn is defeated during the semi-finals.

The sixth match is Goku and Namu’s semi-finals fight. Goku attacks Namu by imitating the Zanzouken that Jackie displayed during his fight with Kuririn. Namu skillfully dodges this attack! Namu attempts to finish Goku off with his special attack, the Tenku pekeji-ken! Goku is hit by the attack and downed, but revives right before the count of ten! Namu further comes out him with the Super Tenku pekeji-ken, but Goku breaks through the technique. Goku then advances to the finals!

The finals for the 21st Tenkaichi Budokai have been decided! Goku is knocked out of bounds by Jackie. But he spins his tail like a propeller and comes back! Goku and Jackie at last put forth their best. The two fire a Kamehameha at the same time!! Goku’s Kamehameha evenly matches Jackie’s, and knocks it back!! Demonstrating a back-and-forth display of such attacks as the Zanzouken, the Suiken, and the Saruken, their red-hot battle continues!

Becoming serious against Goku, Jackie uses the Yoiko Min-Min Ken! Goku enters a deep sleep. He somehow manages to escape this pinch, but he is assaulted by Jackie’s special attack, the Bankoku-Bikkuri-Sho! With a shockwave like an electric current running up his entire body, Goku is robbed of the ability to move. But just as he’s about to surrender, his eyes catch sight of the full moon! Against Goku, who has transformed into an Oozaru once again, Jackie fires an extra-large Kamehameha!! What is Goku’s fate…?!

Jackie blew away the moon, guarding against Goku ever becoming an Oozaru again!! At the same time, Goku returns to his normal form, and the match is restarted. With their energy rapidly falling from exhaustion and hunger, the two muster the last of their power, and their clash unfolds. Having received slightly less damage, Jackie declares that he has won the championship, and he achieves victory. Having learned that there are many strong people in the world, Goku and Kuririn vow to train even harder!