On the eve of her wedding to Lu Chen, Lin Ning discovers that the wedding ring, wedding venue, and even the honeymoon plans were all originally prepared by her fiancé for his former girlfriend, Qiao Ran. When Qiao Ran suddenly returns to the country and rekindles their relationship, Lu Chen becomes torn between the two, repeatedly giving in to his ex. Lin Ning finally sees clearly that she is nothing more than a substitute who is merely "suitable for marriage." With her heart broken, she takes the initiative to walk away and ends their unequal relationship.