本片根据真实故事改编，北京蜡烛胡同里一起“拜歌神”长大的七个发小儿，七个人情同手足。长成过程中有喜有泪遇到所有问题都共同面对，亲如一家人。长大后七个人七个职业七种性格在面对同一个问题时会有不同的看法，但打不散永远是情谊的魂。老幺葛仞患有天生肾脏疾病， 其余六人各尽其力照顾葛仞。把葛仞送走之后，六人将葛仞的母亲认作妈妈，替葛仞延续孝悌之义。

When an anti-narcotics raid goes disastrously wrong, officer Chen Fei is left with the devastating loss of her undercover partner. Lin Xiao’s final sacrifice delivers crucial evidence, propelling Chen Fei into a high-stakes mission to dismantle an international drug trafficking network once and for all.