Shasha, a straight girl (long hair), is brought into sensual world between girls by another girl called Yuz (short hair) occasionally. All of this experience subverted her past perceptions of herself. And She began to doubt herself too. What followed is a series of unanswerable questions. While Shasha and Yuz were speechless, the accidental intrusion of Hongyu, another friend of them broke their silence. And they sit around, just listen to the sound outside the window in a winter morning...