Nam Han-Joon (Seo In-Guk) is a former criminal profiler, who now works as a fraudster. For his scams, he disguises himself as a fortune teller and runs the fortune teller shop Minamdang. He attracts customers with his attractive physical appearance and smooth talking skills. He scams his customers for money, but he also gets involved in their cases and helps solve them. He even provides customer service for his clients. Nam Han-Joon's partners are Soo-Cheol and Nam Hye-Joon. Soo-Cheol runs a private detective agency and Nam Hye-Joon is Nam Han-Joon’s younger sister. She is an elite hacker. Han Jae-Hee (Oh Yeon-Seo) has worked as a detective for 3 years. She is enthusiastic about her job and tries to follow a righteous path. Somehow, Han Jae-Hee gets involved with Nam Han-Joon.