Takumi, a talented chef, finds himself unemployed after losing his job. An opportunity arises for him to work at an ancient boarding house named Astro-sou, but he's hesitant to commit when he learns he must reside there permanently.
However, upon meeting the enchanting caretaker, Mira, Takumi's reservations vanish. As they collaborate, their bond grows stronger. Unbeknownst to Takumi, Mira harbors a secret: she is not of this world!