Chihiro, a high school junior, grows anxious as Christmas nears without a girlfriend in sight. One fateful day, while browsing the internet on his phone, he stumbles upon a mysterious website and downloads its contents. To his astonishment, his phone emits a bright light, revealing a diminutive girl named Rin standing before him. With a mission to ensure his happiness, Rin discloses that she must assist him in securing a girlfriend before Christmas to return to her realm. Can Chihiro navigate the complexities of young love and fulfill this quest in time to save both himself and Rin?