In exchange for his deepest desire, Kimihiro Watanuki becomes indebted to the enigmatic Yuuko's shop, where he must fulfill various tasks for her. Alongside his friend and rival Shizuka Doumeki, they share a meal with Kohane Tsuyuri and her grandmother, reflecting on their personal growth. Watanuki's dream, featuring Doumeki's grandfather Haruka, propels them on a mysterious quest within the family temple's storage, unraveling a series of interconnected findings that lead to a surprising conclusion.