[3][4][5][6] After losing his parents in a fire, Lee Ahn (Park Jin-young) acquires the power of psychometry, the ability to read a person or an object's past through physical contact, and he decides to use it to combat criminals.

While he does not know how to control his power yet, he meets Yoon Jae-in (Shin Ye-eun) who tries her best to hide her painful secrets.

Together with his foster guardian, prosecutor Kang Sung-mo (Kim Kwon), and the latter's colleague, investigator Eun Ji-soo (Kim Da-som), they team up to solve an elusive case that has been haunting the lives of Ahn, Sung-mo, and Jae-in.

The case revolves around the life of prosecutor Kang, and his parents who were the main cause of fire.

Jae-in and Lee Ahn heal each other through their past, present, and future to find the culprit.