进城打工的农民工杨老四第一次被提拔成某建筑工地的工头，他的人生宗旨是，农民没文化，进城受欺负得认，但种种龌龊的事情纷至沓来，让他对自己的信念产生了怀疑和困惑。他开始怀念农村的故乡，借以逃避城市生活，但当他发现甲方使用不合格的沙子时，他的这种怀疑转化为义愤，终于让甲方代表换了沙子，但胜利的代价是惨重的，工头们遭到甲方的报复，甚至拿不到工钱，面对强大的现实，他以中国农民特有的坚韧精神默默抗争，最后举报甲方的一系列违法违规犯罪行为，最终让他成为一个新的农民，新的都市建设者，赢得了同行和各方面的尊重。
Gyeong-ah works as a caregiver and lives alone. The only one she can rely on is her daughter, Yeon-su, but it's hard to see her after she moved out on her own. Meanwhile, Yeon-su, who is suffering from her ex-boyfriend, Sang-hyun, argues with him again and visits her mother’s house. After Yeon-su left, Gyeong-ah receives a shocking message from a stranger.
When given the chance at a fresh-start, a grieving young man and his coked-up stepbrother, must confront a local mafia kingpin and perhaps something even more dangerous - their past.
