上海，是拥有两千多万人口的超级大都市，我们故事的主角，就生活在这里，他们热爱生活，会用美食、艺术和音乐来表达自己对待生活的态度。美食博主向媛媛是独居上海的女孩，每日健康早餐使她在社交媒体上收获大量粉丝。男生哈贝就读于复旦大学哲学系，相比社交，他更享受独自一人呆在安静的角落，静静的思考。在承志带领的海彩虹室内合唱团将这群爱好音乐的人凝聚在一起。茫茫人海中，这些本没有交集的人，通过音乐寻找知己，因为合唱找到真的自己。

Two young people live in a megacity with a population of 24 million. Driven by the wish of self-determination they try to express themselves in means of cooking, art and singing.The blogger girl posts her everyday breakfast in internet. Despite of the online success she wishes to have breakfast for two. The student of philosophy prefers to sit in his calm place and avoids the direct confrontation with the outside world. The famous Shanghai Indoor Rainbow Choir under the lead of Jin Cheng Zhi connects the individuals with the magic of music.