Self-photography, a term referring to women sending nude or masturbation videos of themselves, widely publicized by the National Police Agency and local police organizations to prevent victimization. This time, a fair-skinned, bespectacled girl appears. She receives a photo of a handsome man under the guise of self-photography from a male she has never met, connected only via LINE, triggering uncontrollable sexual desire and curiosity. Despite communicating only through text, their relationship progresses to the point where they call each other boyfriend and girlfriend, realistically capturing the girl's emotional journey.