Haruko Noda has devised a plan to elevate her midday meals. She shrewdly secretes a love letter inside a paper plane and releases it into the wild. By chance, it lands in the hands of dejected Katou Seiji. Upon Haruko's confession of "love" and request for Seiji to become her spouse and culinary mastermind, he surprisingly agrees and becomes her boyfriend-chef. While Seiji relishes in her youthful enthusiasm, he desires greater closeness, whether it be holding hands, kissing, or simply sharing private moments. As they navigate their unusual bond, Haruko and Seiji encounter comedic predicaments among their acquaintances and peers!