On her 32nd birthday, Ye-eun grapples with setbacks after her lingerie business folds, leading her back to her hometown. To lift her spirits, her best friend gifts her a special limited edition dildo. Ye-eun indulges in a steamy night of passion with it, only to wake up the next day without a trace of the toy. Left with memories of a tantalizing encounter, she embarks on a quest to uncover the identity of the mysterious partner from the previous night's escapade.