Takuma Momozuka, Minoru Hinata, Aoi Shibuya, Saki Kimishima, Ryo Tominaga, Shuuji Kayama, Kaito Shinonome, Miu Shinonome, and others are on a historical studies extracurricular activities camp during spring break. On the second day Takuma, Minoru and Aoi visit a famous local temple to investigate the legend of the "Beast Gods" (Kemonogami) where a festival to celebrate them will take place. As they explore, they come across Koromon, then hear screaming. Koromon and the group run to the source and find their classmates being attacked by other Digimon. Koromon digivolves to Agumon and scares the Digimon away. It is at this point, that Takuma and the others discover they are in another world.