Dara and Jiyong are both involved in an accident. That same day, they died together. But they're given a chance to live again. God lets them live for 7 more days. But the catch is that after the time limit, one of them must die again. There's more. God decrees that their lives will be shared, including emotions and physical sensations. They are told not to leave each other's side, or else both of them will die. What will happen during those 7 days? Who will sacrifice? Will they finally find their true love?