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?