A female student named Anna is forced to participate in a clinical trial governed by strict rules. Threatened with having to pay a hefty compensation fee if she withdraws, she is compelled to defecate, urinate, and even have secretions collected from her genitals in front of a doctor. Depicted is Anna stepping into new realms of sexuality amid shame and confusion. Within a disturbing yet realistic setting, the girl's physical and psychological struggles are brought sharply into focus.