Kana is a married woman working at a major cosmetics company, and her subordinate Ai is her subordinate. Ai is cheerful and energetic, but clumsy and prone to making mistakes. Meanwhile, Kana is an excellent employee who is trusted by the company president. She is beautiful, kind, and good at her job, and is popular with both male and female employees. Ai secretly has feelings for Kana. On the day of his business trip, with feelings he cannot tell anyone about, an unexpected incident causes them to end up sharing a room. As they drink more, their relationship grows closer...