Chapter One: "Beginnings"Adapts "And so it begins..." and "The Birth of Greymon"
Seven kids find themselves transported into another world, where they encounter strange "digital monsters" - Digimon. Their search the missing member of their group, Mimi, is successful, but she is being chased by the monstrous Kuwagamon, who pursues all the kids to a cliff edge. The kids' Digimon Digivolve into their Rookie forms to battle him, forcing him back slightly before he bites off of the cliff edge, sending them plummeting into the river below. They wash up on a beach, where attempts to call for help on strange public phones prove futile. Then, as they eat, they are attacked by Shellmon, who steps on Agumon, and seizes Tai.
Chapter Two: "I'll Have Mine Super Sized"
Adapts "The Birth of Greymon" and "Garurumon"
To save Tai, Agumon Digivolves into Greymon, and blasts Shellmon out to sea. Then, the kids head into the jungle, and after narrowly escaping some Monochromon, find a trolley car on an island in the middle of a lake, and spend the night there. Tai stands watch, but embers from his campfire awake Seadramon, who drags the island around by his tail. T.K. is thrown into the water, and Matt dives into save him, but after he does so, he's grabbed by Seadramon, and Gabumon Digivolves into Garurumon to save him, only be frozen solid by his Ice Blast.
Chapter Three: "Rising From The Ashes"
Adapts "Garurumon" and "Biyomon Gets Firepower"
Garurumon breaks free and takes Seadramon down, leaving the kids to explore further during the day. After traversing a forest full of road signs, they wind up in the desert, where Tai spies a village, only to find out that it's smaller than it looks, and is occupied by Yokomon. The village is attacked by the flaming Meramon, who has been driven insane by a mysterious Black Gear that has imbedded itself in his body. The Yokomon are herded to safety by the kids as Biyomon battles with Meramon, Digivolving into Birdramon and blasting the gear out of him. Meramon remembers nothing of what has happened, and the kids and Digimon eat with the Yokomon.
Chapter Four: "Izzy Meddles With Technology"
Adapts "Kabuterimon's Electro Shocker"
The kids discover a massive factory, and while Izzy investigates its power supply, Tai, Joe and Sora free a robot Digimon, Andromon, from between some gears. Unfortunately, one of the gears is another of the strange Black Gears, which imbeds itself in his leg and sends him on a rampage. Meanwhile, Izzy discovers the factory operates on a computer code, and during his analysis of it, it causes Tentomon pain. On the roof of the factory, Greymon and Garurumon battle Andromon, and to help, Izzy tried to use the code to make Tentomon Digivolve...
Chapter Five: "Oh, Poo!"
Adapts "Kabuterimon's Electro Shocker" and "Togemon in Toy Town"
Tentomon Digivolve into Kabuterimon, and battles Andromon, defeating him by blasting the Black Gear out of his leg. Andromon leads the kids to the entrance of a sewer tunnel, and they head off through the sewers, dreaming about what they'd do if they were home. Then, quite suddenly, they are attacked by the sewer-dwelling Numemon, who chase them out of the sewer by throwing their poo at them. They make it to the surface, but when Mimi investigates some vending machines, more Numemon burst out of them, and chase the kids, splitting them up. While Mimi hides from the amorous Numemon, she is confronted by Monzaemon...
Chapter Six: "Batteries And Malicious Intent Not Included"
Adapts "Togemon in Toy Town"
The supposedly-friendly Monzaemon attacks Mimi and Palmon, trying to take them to Toy Town, but a Numemon helps them to hide from him. They then make their way to Toy Town, where they find the other kids brainwashed, letting toys play with them, and the other Digimon trapped in a chest. When Mimi stomps on a toy, Monzaemon attacks again - the Numemon try to fight him, but are no match, prompting Palmon to Digivolve into Togemon, and knock a Black Gear out of Monzaemon. To thank the kids for freeing him, Monzaemon uses his Hearts Attack to fill them with good feelings.
Chapter Seven: "Joe and Gomamon's Eggcellent Adventure"
Adapts "Ikkakumon's Harpoon Torpedo"
At the base of Infinity Mountain, the freezing kids find some hot springs, which are just right to cook the eggs they happen to find in some refrigerators nearby. Joe warns against eating strange food, but no one listens, and everything turns out fine anyway. At night, Joe decides to climb Infinity Mountain to get a good look around and draw a map, but while he and Gomamon climb, they are attacked by Unimon, who has been possessed by another of the Black Gears. Tai and Sora arrive with Greymon and Birdramon to hold Unimon off, then Joe jumps on Unimon's back to try and pull out the Black Gear. Gomamon Digivolve into Ikkakumon to save Joe, blasting the gear out. Unimon flies off, and everyone goes to the top of the mountain, and look down to discover they're on an island. And above them, an evil presence watches...