Yoo Seol-Ok liked mystery novels and wanted to become a detective, but she gave up her dream after marrying. Now, she is a housewife with a husband who works as a prosecutor. She meets Ha Wan-Seung. He is a passionate detective and they decide to collaborate to solve cases.

• Choi Kang-hee
• Kwon Sang-woo
• Lee Da-hee
• Oh Min-suk
• Kim Hyun-sook
• Kim Tae-woo
• Park Byung-eun
• Kim Won-hae