Demons and angels are two opposite races. As the times change, they are tired of fighting. In order to coexist peacefully, they decided to start a marriage plan! The plan has a one-year observation period. If the devil and angel still cannot get along well, the marriage will be cancelled. As a result, Jiacheng (devil) and Yu Shanshan (angel) were “luckily” selected by lottery as marriage partners, and started a “happy” cohabitation life with the destination of divorce~