An ordinary female high school student, Molly, accidentally transfers to a boys' school because of a mistake in filling out the transfer form. She meets four beauties, namely Hosia, who is venomous and mean, Barcaro, who is sunny and cheerful, Luo Xiu, who is stubborn, and Sule, who is gentle but afraid of girls. They are Molly's roommates, but they don't know that Molly, who is disguised as a woman, is a girl, thus starting Molly's embarrassing life on campus. . . . .