Yuna, a mother whose love is too heavy for her son who has entered puberty, finds herself being distanced by him. Yuna, wanting to get her son's attention, invites him on a date over the weekend but is coldly rejected. A greater shock awaits the disheartened Yuna: it turns out that her precious son has made a reservation at an 'Oppa Bar.' Unable to bear the thought of her beloved child having sex with a stranger, Yuna decides to stop this at any cost. She beats him to it and debuts as an exclusive hostess for her son at the Oppa Bar...
