Biyomon returns to the Damon household with numerous Fresh and In-Training Digimon in tow. Yoshi and Keenan help out in taking care of them, despite all of the headache-inducing antics of the childish Digimon. Duftmon, under the orders of Yggdrasil, attacks the real world nearby the Damon household. Rosemon and Ravemon do their best to stop the Royal Knight but fail. However, both go through Burst Digivolution and defeat Duftmon once and for all.