Yoon-Sook Namgung is a 25-year-old Korean-American woman with the remarkable ability to see two types of "strings" connecting various people. The first is blue and stretches between sexual partners. The second-dark black-connects murderers and their victims. If you have a murder that needs solving, Yoon can help. Worried your partner is cheating on you? Yoon can literally SEE the connections. Yoon's life-for all the drama and constant TMI-is good, at least until the day she notices a string, a BLACK string, connected to... herself! This means she'll either soon murder someone, or be murdered herself! So...dang. Which one?