Su Nuan, a modern kindergarten teacher, crosses over to become a disgraced concubine who is sent to the cold palace. Faced with the cold and desolate palace walls, Su Nuan transforms the cold palace into a kindergarten by virtue of her optimistic nature, taking care of the neglected royal children and princesses, and bringing them warmth and happiness with modern education concepts. Her kindergarten soon spreads throughout the palace, attracting the attention of the emperor and concubines. As Su Nuan's warmth gradually impresses the indifferent courtiers, she is also accidentally involved in a court dispute, but resolves the crisis with her wit and the children's sincere guardianship. With love and education, Su Nuan changes the fate of the cold palace, and also quietly changes the direction of the whole story of the palace.
