Demons and angels are natural enemies that have grown tired of fighting each other. In order to coexist peacefully, they decided to arrange a marriage between the two races! If the pair can't get along within the one-year trial period, the marriage will be dissolved. This is how Jiacheng (Demon) and Yu Shanshan (Angel) became the chosen "lucky" pair for the marriage. Sharing the goal of divorce, the two began their lives of "happy" cohabitation!