A ruckus starts at Takatos school when its found that someones been drawing chalk lines all over the field, and Miss Asanuma tells her students to tell her if anyone finds out who the culprit might be. Takato overhears some students talking about the recent weird events at school, including the principal seeing a dinosaur and the bread disappearing, and the students speculate that it must be the schools ghost. When Takato brings it up to Juri, Juri says that shes seen it - when she was at the infirmary, shed seen something rustle the medicine bottles and jump away, along with some footprints on the ceiling.
After school, Takato asks Jian if he believes in ghosts, while meanwhile Culumon watches over a soccer game going on at the school. Once everyone leaves the school and night falls, Culumon breaks open the equipment shed, draws some random lines with the chalk line-drawer, and plays with a soccer ball, but is disappointed that nobodys there to play with him.
The next day, Takato goes to school with Guilmon, since its a day off for everyone but Takato has to feed the rabbits. They arrive on the scene to find some administrators talking about the new chalk lines all over the field, and while Takato feeds the rabbits, Guilmon senses a Digimon nearby. They find Culumon, whos happy to see someone to play with, and Takato takes him to Guilmons hideout in the park, where they meet with Jian and Terriermon.
Jian suggests finding a Tamer who can take care of Culumon, and Takato takes him to see Hirokazu, whos using some attack cards in a Digimon battle. Jian points out that the attack card Hirokazu used is a dangerous card that reduces defense to 0 in exchange for attack, and Takato realizes with an Imagine Spot that said mentality may not be good for Culumon. Terriermon suggests Jians sister Shaochungnote , but the sight of her playing with her dolls leads to another Imagine Spot of her doing nothing but dressing Culumon up. Jian asks Takato if theres a girl in his class he might suggest, and Takato thinks of Juri, but figures that she might end up too scared of Culumon.
Despite Takatos order to Guilmon to take care of Culumon, Culumon convinces Guilmon to play with him and leads him to the schools equipment shed. Guilmon digs a hole so that they can get into the shed and past the locks and together they draw lines on the ground, with Culumon hoping that people will come to play with them. The (rather pentagram-shaped) drawing ends up summoning a Digimon, and when Takato, Jian, and Terriermon look for Guilmon and Culumon, they see the Digimon emergence fog coming from their school.
The Digimon turns out to be an Evilmonnote , whom Guilmon ends up pissing off by calling him small, and Culumon makes a run for it while Guilmon attacks in the hopes of protecting him. Takato, Jian, and Terriermon arrive on the scene, and Takato uses an Option Card to give Guilmon white wings to fly with. Jian in turn has Terriermon enter the battle, using a speed Option Card of his own, but the powered-up Guilmon and Terriermon are unable to stifle Evilmon. However, Ruki and Renamon appear, and Ruki uses an Option Card to make a decoy Renamon, while the real one lands an attack, defeats Evilmon, and loads his data.
Ruki says that Evilmons data is all they were after, and Takato calls her horrible for wanting nothing but the data of a living being. Ruki declares that Digimon are nothing other than Digimon and tries to take her leave, but shes interrupted by Culumon, who just wants to play. Takato yells at Ruki not to dare do anything to Culumon, and Ruki obliges, walking away in silence with Renamon. Culumon, too naïve to register what had just happened, runs off aimlessly despite Takatos protests that its dangerous out there, and Jian reasons that maybe Culumon doesnt need a partner after all. They decide to leave him be...but unfortunately, the next morning, the property damage doesnt seem to have escaped the schools notice, and Takato and Jian decide to just go along with the ghost story rumors for now.
- Berserk Button: Evilmon's is being called small.
- Bowdlerise: The hexagram-like drawing on the ground gets edited a bit for the dub.
- Evilmon is also changed to Vilemon, likely due to American censors usually having issues with characters that have the words evil or death in their names.
- Eyepatch of Power: Hirokazu sports one during Takatos Imagine Spot of him using the attack card foolhardily on Culumon.
- Foreshadowing: In the English dub, Jeri claims she approached the medicine cabinet "like a lion stalking its prey." Later in the series, Leomon becomes her Digimon partner.
- Pintsized Powerhouse: Evilmon packs quite a punch despite being tiny, for he's a Champion level Digimon.
- The Ditz: What Takato and Jian definitely think of Culumon.
- Would Hit a Girl: Vilemon says he'd hate to fight a girl, but battles Renamon nonetheless.