故事发生在改革开放的时代中，讲述住在老北京幸福胡同里的一群年轻人的故事，在1978年，吴西凯、陈瓦儿、胡美华、李墙、许卫东几个人都是发小，共同走进高考的场地，高考结果成绩颁布之后，陈瓦儿与李墙没有考好，胡美华则是成功的进入到财会学校，许卫东直接去军校。使几个发小彼此的生活都逐渐的改变，产生差距，跟着时代变化的李墙在市场当中赚到第1桶金，如愿的娶到陈瓦儿，后来因为有钱自我膨胀的李墙抛妻弃子，导致陈瓦儿生活受到巨大的打击，但依旧没有向生活低头，凭借个人强大的精神创办知名的企业。远在美国的胡美华成为金融专家返回金融街。许卫东一直在艰苦的环境下保卫祖国边疆，成为一名真正的军官。老实本分的吴西凯毕业之后分配在基层，成为一名基层干部。每个人都在不同的方面向着自己的目标奔跑

The story takes place in the era of reform and opening up. It tells the story of a group of young people living in the happy alley in old Beijing. In 1978, Wu Xikai, Chen Wa'er, Hu Meihua, Li Qiang, and Xu Weidong all entered the college entrance examination venue together. After the results of the college entrance examination were announced, Chen Wa'er and Li Qiang failed the exam, while Hu Meihua successfully entered the accounting school. Xu Weidong Go straight to military school. The lives of several young people gradually changed, creating gaps. Li Qiang, who followed the changes of the times, earned his first pot of gold in the market and married Chen Wa'er as he wished. Wife and son abandoned Chen Wa'er's life, but he still did not bow to life, and founded a well-known enterprise with his strong personal spirit. Hu Meihua, who was far away in the United States, became a financial expert and returned to Financial Street. Xu Weidong has been guarding the motherland's frontier under difficult circumstances and has become a real officer. Wu Xikai, who was honest and responsible, was assigned to the grassroots after graduation and became a grassroots cadre. Everyone is running toward their goals in different ways