Dong-Ho, a singer of pansori, travels the country in search of Song-hwa, a fellow orphan who also studied under the same strict master.

A romance takes place between Kang Ji-Sung aka Louie and Ko Bok-Sil. Louie is from a rich family, but he has lost his memory. Ko Bok-Sil is a woman with a heart like an angel. Louie learns about true love after meeting Ko Bok-Sil.

Based on real-life cases, this Korean drama focuses on a group of detectives in the Seoul Gangnam Police Homicide Division who solve crimes with their variety of skills and investigative methods.