Pei Shuchen, Ye Feng, Shen Nian'an, and Xinyue were celebrating their graduation one second, and then traveled to 1972 the next.
Pei Shuchen pretended to be the wife of Xu Jianjun, the eldest brother of the Xu family. One of them was flamboyant and the other was rigid, which led to all kinds of quarrels.
Ye Feng traveled through a bridal night with Xu Jianshan, the second brother of the Xu family. At the beginning, he kicked the other person out of bed and even revealed his own origins.
Shen Nian'an traveled through a patriarchal family. Her parents planned to buy her in exchange for money. She escaped to find her fiancé. Unexpectedly, the fiancé turned out to be Xu Jianjie, the third eldest son of the Xu family. The moment she saw the other's eldest and second sister-in-law, she decided to marry Xu Jianjie.
Xin Yue traveled through time and became the fake daughter of the real daughter. When the real daughter came home, she was forced to make room for herself and go to the countryside to become an educated youth. Unexpectedly, on her first day in the countryside, she met Xu Jianyu, the fourth son of the Xu family, who she fell in love with at first sight, and also found her bestie.
The four sisters grew up together easily, but they never imagined that they would become sisters-in-law once they traveled through time.
With the sisters by their side, they gradually developed a sense of belonging to the unfamiliar seventies.
After finding each other the man who will accompany them for life, they are ready to use their own skills to live a fulfilling life in the 1970s.
