With Hiro now in their team and Lunamon a DigiEgg, Team 3H must investigate the source of an illegal software. It turns out that the one holding the software is ChaosGallantmon, and he manipulates Apemon into becoming evil again.
While looking for Hallow's lost Muchomon, Dusk meets a strange girl named Lucibella. She takes him to the Digital World, where they find Hiro. Apemon again goes evil, and Dusk's DigiEgg hatches to fight Apemon off.
When Hiro is the last one to perform Spirit Xros, Lucibella finds Team 3H and challenges them with two of her own Digimon, Grimmon and Greymon. They are shocked when they learn she can Spirit Xros as well.