The love story between a top actress and an airline director who each suffers an unusual phenomenon. He suffers from prosopagnosia, while every month she transforms into someone else for a week.

• Seo Hyun-jin
• Lee Min-ki
• Lee Da-hee
• Ahn Jae-hyun
• Lee Tae-ri
• Moon Ji-in
• Na Young-hee
• Lee Moon-Su