A mysterious karaoke box located in the suburbs. Near the reception desk, strangely enough, there's a vending machine selling condoms, as if hinting at some hidden agenda. Perhaps the management intentionally designed it this way. Couples tired of love hotels or those seeking cheaper alternatives might be drawn to this setup. Unaware they're being secretly filmed, three amateur couples passionately indulge in bold sex, fully immersed in the rhythm of the music. Moving their bodies in sync with the beat, they surrender to their desires.