Occurring in the summer during 02, Takeru and Hikari are vacationing in America, visiting their friend Mimi. However, a mysterious wind passes over the world, and suddenly all the original Chosen Children have disappeared. Hikari feels the presence of a 'crying Digimon', and they follow her feeling to where a young American boy is facing off a large Digimon with his Digimon partner. It seems that the boy knows this monster he's fighting, and tells his partner not to hurt it. After being struck a few times, it disappears, and the boy runs away from Hikari and Takeru.
Takeru (T.K.) und Hikari (Kari) besuchen Mimi in New York. Dort treffen sie zufällig den jungen Amerikaner Wallace und zwei weitere Digimon, von denen eines, Chocomon genannt, weniger freundlich gesinnt zu sein scheint. Noch bevor sie eingreifen können, verschwindet Chocomon und der Junge flüchtet. Das Ereignis ernst nehmend, trommeln sie die Charaktere der zweiten Staffel zusammen und reisen dem Digimon hinterher.
