Siwan and Yunu, an omega couple, share a complex and emotionally charged relationship filled with love and sensitivity. Siwan, possessing protective and possessive traits, dislikes when Yunu is in the company of others, often feeling jealous when attention is diverted from him. The tensions between the two reached a peak during a shopping trip when Yunu, a sensitive and shy individual, refused to buy Siwan a plushie. Siwan's melodramatic reaction in public embarrassed Yunu, leading to a domestic spat upon their return home. Now, both find themselves inexplicably locked in a room together with only one rule: make up or never leave. The air is thick with tension, with Siwan's possessive nature colliding with Yunu's sensitive personality.