It is Ruki's birthday and a strange Locomon, a train Digimon, suddenly appears in a railway line. A Digi-Zone also appears. Takato and the other tamers try to fight it but they are of no match to Locomon. Takato, Guilmon, Ruki and Renamon get on Locomon to investigate but Ruki gets controlled by a Parasimon who also controlled Locomon. Renamon tries to persuade her but Parasimon's control over Ruki was too powerful. It made Ruki attack and hurt Takato and Renamon when they were trying to persuade her. Ruki awakes at the end and the tamers evolve to Ultimate. But a lot of Parasimon start emerging from the Digi-Zone wrapping around the Digimon. Dukemon evolves to Crimson Mode and defeats all the Parasimon and sending Locomon back to the Digital World. The movie reveals the emmotional side to Ruki, as it shows a part where she is in a dream world with her father. It also shows that she is very hurt because he is not around.