Retired gang member Gang-Pil tries to find another job rather than running an illegal inquiry agency to win custody of his daughter back. In order to pay for the lawyer, he accepts Lee Munhee's request to follow the Entrepreneur Park Yongdae, but soon after both Park and Lee go missing and Gang-Pil starts digging in.

A fabled painting from royal palace was discovered after 400 years. Once properly restored, it could fetch at least $40 million in the international auction market. Bae is the owner of the gallery which possesses the painting. She scouts top-tier restoration artist Lee to work on the painting. With Lee's expert stroke, the controversy surrounding the painting is slowly unveiled. As the painting's true form is restored, art experts in Korea hold a collective breath. Little do they know that they're only a part of a bigger scheme.