After the incident with Orphamon, as time passed, the Odaiba area gradually revived. "After returning to Japan, I decided to take a bath in a big bathhouse!" Because of Mimi's words, and to welcome the new partners Meixin and Mainemon, everyone went to the nearby hot spring theme park. Although they had a good time, there was no sign of Ajou here. Faced with the fact that the college entrance examination was approaching, he was troubled between the college entrance examination and the mission of "the chosen children". "Why do we have to face it again?" At this time, an infected Digimon appeared in Odaiba again. This was Ogamon with a proud soul. Watching Ogamon's rampage on TV, Mimi and Palmon decided to attack. "We must let people know that there are good Digimon!" However, Mimi and Palmon ignored Koshiro and participated in the battle, which had unexpected results. Ajou and Mimi, each with their own troubles. On the day of the Tsukishima Comprehensive High School Cultural Festival, a man appeared in front of them. Now, adventure has evolved again...