On a night of thunder and lightning, a single mother walked into a mansion with her eight-year-old girl Yingyao and started a new life. Although Yingyao is young, she has a strong ability to adapt to changes in life. However, what surprised Yingyao the most was that she had seven brothers and two younger brothers overnight! This family seems peaceful, but internal turmoil is brewing. Yingyao's arrival and integration gradually broke this peaceful situation!