Freshman Yi-Shuan is very excited to leave home and move to her college dorm. Strangely, due to the female pheromone in the house, Yi-Shuan and her other two roommates all have their periods on the same night, which is the synchronization of the menstrual cycle, also called: McClintock effect. Moreover, because of this effect, Yi-Shuan and her roommates start to see a ghost named: Chun-Qio. Chun-Qio is a virgin ghost, who is a believer of pure romance. On the other hand, the first roommate: Jessica is a party slut, who loves to party and selfie. And, the second roommate: Li-Chi is a chubby girl, who turns everything into fate and Tarot cards.
How will these 3 girls with such different personalities, who share the same period date, spend their dorm life together? Moreover, can these 3 cute-and-smart girls help Chun-Qio lose her virginity so that she can move on to be more of herself, even as a ghost? The craziest comedy about girls’ dorm life that you have ever seen!