Introvert and plain-looking Jane and beautiful Sunny are classmates and closest friends. But unlike Jane, Sunny has many friends beside her. To compete with her other friends, Jane tries hard to maintain their camaraderie. Meanwhile, Sunny begins to resent this possessive friendship. She starts to pay more attention to a homeless guy around. Finally, Jane's accumulated resentment explodes. At the occasion of a role-playing party, Sunny is too preoccupied by the homeless guy that she doesn't remember to notify Jane, nor does she invite other classmates to come. Jane turns all of her hatred into Dali-esque drawings in the notebook. One day, this notebook disappears. Jane searches it madly, but still can't find it. She is desperate. Nevertheless Sunny feels the distance between them, and attempts to patch things up with her. Sunny once again becomes the center of Jane's life. Just when Jane thinks that those dark days are gone, she comes across a corner of a familiar notebook behind the locker. Only when she flips through the first page and sees her own surreal drawings full of hatred would she believe that this is the secret notebook of her own. Sunny appears behind Jane unexpectedly. Sunny apologizes profusely, but Jane doesn't notice at all. That day after school, Sunny returns to home. She thinks about Jane, and can't stop but burst into tears. Is she sad that Jane has left her forever? Or is she afraid that she will never be able to get rid of Jane?