The four brothers of the Ma family in Pener Hutong used to live happily like other children. Their parents died in a car accident, which ended these ordinary days. The last words left by their father before his death were: study well. The four brothers lived on relief money. And the phrase "study well" became the words that the eldest brother Ma Xuewu (played by Zhang Jiayi) always kept in mind. For the sake of his family and his younger brothers, he had to give up studying and went to work in a factory. Among the brothers, the most troublesome one is the second brother Ma Xuejun (played by Deng Chao). He seems to have endless bad ideas, always loves to act on impulse, and has caused a lot of trouble. The family's difficulties forced the eldest brother to send the sick fourth brother to his home. The four brothers grew up in poverty, and their different personalities made them embark on completely different paths. They experienced different lives and experienced the changes of the times. What they have in common is the setbacks and difficulties on the road, and the fact that you are my brother, which will never change. This drama is collectively called the "Family Trilogy" with "Halfway Couple" and "Brothers and Brothers".