Cho Sora is a retired police officer. Several years ago, she quit her job to devote her life to studying tarot cards. Now she is “Madame Tarot,” the owner of a fortune-telling salon, especially popular among escorts and prostitutes. But no one knows that Cho Sora did this to find her missing sister, Sohee. Which, as Taro says, is located in one of the brothels.

However, the past is not ready to let her go so easily: during a raid on the brothel, Cho Sora is detained by her former colleagues. To prove her innocence, she decides to help them and makes a case for one of the current crimes... And solves it.

Now the Seoul police, who were initially skeptical about Madame Taro’s unconventional method, are extremely interested in her services. And when a wave of brutal murders sweeps across the city, Sora has no choice but to cooperate with the police. After all, all the victims worked as escorts. And that means her sister Sokhi is also in great danger....