About a girl who believes in her first love, but he disappeared. When a new guy comes into her life, she still believes that her first love is what she needs, so what will happen when her first love comes back? She will have to choose between her new love and her first love.。一宗多年前的杀人案浮出水面,牵出一个在逃的杀手,六扇门捕快张一和刘魁联手侦查,发现案中有种种蹊跷,就在案情逐渐大白时,刘魁和张一的身份也浮出水面,刘魁为了张一牺牲了自己,而张一则决定和过去诀别。。怀揣民歌梦想的陕北后生马聪,到西安应聘陕北民歌促销歌手,与陕北女孩王燕因同唱一首民歌《一对对鸳鸯水上漂》相识,进而相爱,但是由于梦想和追求的差异,二人最终分道扬镳。梦想和爱情双双受挫的马聪黯然返乡,经民歌高手老朱指点,他坚定了要把陕北民歌发扬光大的信念。马聪遍访名家、虚心求学,学到了很多濒临失传的优秀民歌,也结识了在陕北做毕业论文调查的音乐学院研究生孙倩。在省级民歌大赛上,马聪凭借一首《一对对鸳鸯水上漂》一举成名。在孙倩的启发和鼓励下,马聪决定在西安筹办民歌欣赏晚会,但由于不懂得市场经营,晚会的票房很差,场地和灯光音响的费用无法按期支付,在无计可施的时刻,一位神秘嘉宾购买了几百张门票,马聪的演唱会得以如期举行。然而,这售出的几百张门票却没有观众……。