When the Heavenly Emperor's son, the third prince, soul gets corrupted during a rebellion, the Emperor is forced to send him down to the mortal realm to regain his soul strength. However due to the nature of the curse placed upon his soul he is doomed to live his nine mortal lives in misery. Unable to see his son suffer, the emperor tasks one of the world's system with ensuring his son's happiness. As the second oldest world system in existence; system 02, otherwise known as system Silvi is a suitable choice to ensure his son's happiness. However, system Silvi has a slight defect, she doesn't understand what happiness is.