Tooru strives to excel as a maid while Kanna adjusts to elementary school life, infusing daily life at Kobayashi's with constant mischief. Amidst routine chaos, a significant event unfolds as a massive landslide hints at a dragon's immense power on the hill where Tooru and Kobayashi first crossed paths. The unexpected arrival of Ilulu, a formidable Chaos Dragon, shakes things up further with her overwhelming strength challenging Tooru. Rather than engaging in a deadly confrontation, Ilulu, fascinated by Kobayashi's bond with dragons, opts to observe the unique connection. As a new dragon presence disrupts their lives, Kobayashi's unconventional existence alongside her dragon maid grows even more eventful.