A clumsy High School girl named Choi Jinri who is at the bottom of her class has a crush on a popular genius male student, Kim Jongin ever since she first layed her eyes on him. Jinri tries to confess her feelings to Jongin through a letter but he rudely rejects it and gives it back with a mark of D-. However fate intervenes when an earthquake destroys Jinri's family house, and Kim Jongsun, (which happens to be Jongin's fathe