Eunsoo, who suffers from an eating disorder, participates in a three-week training program for new employees at her new job. Due to the stress of the training program, Eunsoo keeps binge eating and vomiting while hiding from the prying eyes of others, until one day she is caught vomiting by Mijin, another trainee. The film is based on the director's own experiences, who suffered from an eating disorder for 10 years while working for a large company.