In the Digital World, a digimon named Culumon is being chased by another digimon named Maildramon. After a short while of chasing the chase is interrupted by another digimon named Dark Tyranomon. Maildramon and Dark Tryanomon have a short battle. As Maildramon has the upper hand Dark Tyrnaomon evolves to Metal Tyranomon. As Dark Tyranomon evolves, Culumon gets taken away by the blast of the evolution. As Culumon gets taken away, Metal Tryanomon crushes Maildramon. While Culumon is being taken away he gets sucked into the real world.

In West Shinjuku Park, a boy named Takato Mutsuda is having a card battle with his friend Hirokazu Shiota, The card battle is the same battle that went on in the digital world. Takato wins the card battle and he and Hirokazu get prepared to go to school. As Takato is putting his cards away his card box falls scattering his cards. As the cards are falling Takato sees the mysterious blue card. Takato Swipes the card through his CARD FIGHTER EX card reader causing it to break. He then realizes that hes late for school and hurries to put his cards away. When he puts his card in is spot he runs to school. When he gets to class the Teacher makes him stand outside the door for his lateness. As he is standing out the he takes out a pencil, a pen, and a notepad. Takato then creates the digimon Guilmon. As he stays after school he finishes Guilmon's stats.

Meanwhile an organization Hypnos is monitoring digimon that may come into the real world. They are trying to seek out Guilmon but they can't because he's not a full digimon yet. As Takato gets out of school he runs back to the park where he and his friends keep they're cards. he looks up at his box, the box has electric bolts coming out of it. Takato grabs the box opens it and turns it upside down making the cards fall out. in the pile of the card lies his CARD FIGHTER EX card reader. It then transforms into a digivice. Looking in wonder Takato looks at the digivice and sees that it has no data. He then runs back to his house and up stairs into his room. Takato then dumps his cards out and searches through them for the blue card. He sees that it's gone and realises that that card is what transformed his card reader into a digivice. Realizing it's a digivice he tries to swipe his Guilmon picture and stats into to it, however he is unsuccessful because the note pad is to big. His mother tells him that it's time for a bath. As he walks out of the room his digivice rips the pages with Guilmon in to the scanners. Takato walks to the digivice and looks at it. He sees that there is a digitama displayed on the digivice's screen. After his bath he goes to sleep and has a dream. in that dream he sees the tamer Ruki Makino and two digimon Ruki's Renamon and Lynxmon. Reanamon and Lynxmon stand in front of each other. Lynxmon then tackles Renamon holding Renamon down. Ruki the slashes a High Speed Plug-In B card through her digivice making Renamon faster. Renamon then gets out of Lynxmon hold jumps into the air and uses Kouyousetsu on Lynxmon which destroys him. Takato then wakes up. Later that day Takato looks at his digivice and sees that the digitama has hatched. scrolling then the digivice's screen he sees a compass pointing to Guilmon's direction. he then follows the direction the compass is pointing him too. When he gets to the location Guilmon appears. Takato is very excited to see a real life digimon that he created but when Guilmon blasts two rats the excitement turns to fear.