At Incheon International Airport, brilliant but distant engineer Lee Soo-yeon and clumsy, idealistic rookie Han Yeo-reum cross paths as they navigate tough challenges, personal secrets, and unexpected connections in their new jobs.

• Lee Je-hoon
• Chae Soo-bin
• Lee Dong-gun
• Kim Ji-soo
• Kim Kyung-nam
• Lee Soo-kyung
• Kim Dae-gun
• Rowoon