The queen of the human tribe gave birth to twin girls. Respected by the entire tribe, the older sister Qing Kui, who is gentle and kind, is betrothed to the heavenly prince. The younger sister, Ye Tan, smart and cunning, shunned by her own people, is betrothed to the demon prince. Due to a mix-up, the two sisters are married off to the wrong husbands. It paves the way for two beautiful romances and also ignites a conspiracy that shakes the four realms.

Youth Party is a spin-off show based on Youth With You 3, and it is based on the stylish and cool lifestyle of young people. The program takes 12 real life scenarios of youth as its theme, and designs games associated with the scenarios as the mechanism for social, so that in the familiar scenarios and interesting games, the social of trainees can happen for real and youth can grow together.