Investigating the death of his late friend, Namjoon, Jungkook tries to uncover a legend about a supernatural curse knife that circulating throughout Seoul. As soon as anyone uses the knife or touches it, he or she has exactly 3 days left to live, seeing strange things throughout the time they have left. The doomed few appear to be ordinary people during the day to day life, but when photographed, they look translucent. A marked person feels sick to the touch. Jungkook gets a hold of the knife through the investigation, refusing to believe the superstition. A collage of images flash through his mind: his death. When he notices his arms have cuts on it that weren't there before, he realizes that the curse could possible be true. He calls his boyfriend Yoongi, to help him with the situation. While Yoongi examines the knife, he gets the same flashes, him being cursed as well. Will they find away to get to the bottom of the situation, or well they like the others and be cursed.