Within the Usagiyama Shopping District resides an eccentric yet tight-knit group of shopkeepers. Tamako Kitashirakawa, a clumsy but endearing teenager, is part of a family of mochi bakers who own a charming establishment named Tama-ya. One day, Tamako encounters a talking bird who introduces himself as royalty from a far-off land. Dera Mochimazzi, as he refers to himself, claims he is searching for a bride for his country's prince. Dedicated to his mission, Dera follows Tamako home and develops a craving for mochi, becoming so overweight that he can no longer fly back to his homeland; consequently, he moves in with Tamako's family and becomes the community's beloved mascot. Meanwhile, Tamako's friend, Mochizou Ooji, continues to conceal his true feelings for her. Their fathers are fierce rivals in the mochi business, but will this be enough to drive a wedge between Tamako and Mochizou? And what exactly will happen to Dera's quest to find his prince’s destined bride?