It's Rika's birthday and Takato planned a surprise party for her. Rika eventually finds out. A Locomon appears in the city and goes berserk, so Rika with Renamon gets on board to stop it. Henry upon hearing about the Locomon goes to find Takato. Takato and Growlmon try to fight the Locomon, but he's too fast. Henry finds Takato, but he accidentally took his sister's Lopmon instead of Terriermon. Takato and Guilmon eventually reach the Locomon and find Rika, who is being manipulated by Locomon, who digivolves into GranLocomon and goes even faster. Rika attacks Takato who doesn't reply because he doesn't want to hurt Rika. Takato eventually Bio-Merges with Guilmon to form Gallantmon and begins to fight the GranLocomon, but he doesn't damage it. Gallantmon realizes that GranLocomon is being controled by Parasimon, so Gallantmon turns into Gallantmon Crimson Mode and kill the digimon. With everybody saved, the Tamers go celebrate Rika's birthday.