李大宝（沙溢饰）是纺织厂的机修工人，十多岁的时候父亲去世，留下了奶奶、妈妈和兄弟姐妹5个人。他帮妈妈撑起这个家，中学毕业后直接选择了工作，并成为北京市劳模和厂标兵。张朵朵（徐梵溪饰）是歌舞团的舞蹈演员，在参观纺织车间时，张朵朵的头发不慎卷入织机，千钧一发之际，被李大宝救下。汇报演出时，李大宝不慎撞上正在换衣服的张朵朵，被当做流氓关了起来。张朵朵为了救李大宝，同意与他结婚。由于家庭背景相差悬殊，婚后张朵朵与工人出身的李大宝和住在平房的这一大家子人总是格格不入，同时事业上也迎来了业务水平拔尖的同事高歌（辛雨锡饰）的阻击自己出演舞剧女一号的梦想，但是李大宝用他淳朴善良的敞亮心胸包容着张朵朵，经过不断的磨合，一家人也用朴实宽广的胸襟接纳了张朵朵。

After graduating from middle school, Li Da Bao directly went looking for a job to support his family since his father died early. Now he’s responsible for repairing the machines in a textile factory. When Zhang Duo Duo, a performer in a song and dance troupe, goes to a spinning and weaving workshop, her hair gets stuck and Li Da Bao is the one to save her. He accompanies her to the song and dance troupe to report the incident, but accidentally bumps into Duo Duo while she’s changing clothes. To save him from being viewed as a hoodlum, Duo Duo decides to marry Da Bao.