To-il tutors high school student Ho-hoon, but she soon falls in love with him and gets pregnant. The film unfolds a series of playful happenings when To-il embarks on a journey to find her birth father for the wedding, though she is living with her step-father.

• ATO
• MOTTO
• Krystal Jung
• Jang Hye-jin
• Choi Deok-moon
• Shin Jae-hwi
• Lee Hae-yeong
• Kang Mal-geum
• Nam Moon-chul
• Jang Hat-sal