Gil Oh-so, an employee at a cleaning company, meets Jang Seon-gyul, the boss of the company. The two are diametric opposite when it comes to cleanliness. With the help of Oh-sol, Seon-gyul faces his mysophobia and falls in love with her.

• Kim You-jung
• Yoon Kyun-sang
• Song Jae-rim
• Yu Seon
• Ahn Suk-hwan
• Kim Won-hae
• Min Do-hee
• Ko Gun-han