Lan Yuechuan is a first-year student at an ordinary high school who has no expectations for life. He is withdrawn and rarely socializes. The teacher has seated him in the very last row. One day, a transfer student arrives. As soon as the girl steps into the classroom, she walks straight to his desk, points at him, and declares, "I want to sit next to her!!!" Lan Yuechuan is rather annoyed by this sudden "change." After spending some time with the girl, Yuechuan accidentally discovers some of her secrets. Afraid she won't be able to explain herself, the girl has no choice but to take Chuan Yue to her home. To his surprise, something unknown to the outside world is hidden there?!