Innocent underclassman Song Lingxia appears aloof on the outside, but hides secret desires within. On the college campus, she and her crush go from a shy first meeting to intense entanglements in late-night dorms and empty classrooms. Her refusals are just playing hard to get; her wet body opens up again and again on its own, begging to be filled and possessed. By day she's a good girl, by night she becomes the most wanton prey, until she sinks completely beneath him.