十年前的一次超自然发光事件导致张鹏（小沈阳 饰）的好友神秘失踪，十年后，张鹏跟随摄制组重返事发地寻找真相。当他们再次来到“发光禁地”时却频繁遭遇离奇恐怖的事件，认知逐渐错乱、躯体不断恶化、理性逐步崩坏，禁忌的骇人真相，将不可逆地摧毁一切……光源不再象征安全，请远离所有发光体！
纪雅清（刘诗诗 饰），旅游杂志编辑，每天在都市丛林中疲于奔命，和未婚夫志远的感情也越来越索然无味。婚礼前夕，雅清替好友去云南普洱完成专题。到了普洱的纪雅清意外发现一个即将离世的台湾老人对初恋的思念，于是她决定改变选题，去追寻老人的初恋。 许念祖（周渝民 饰），画家，潇洒帅气的他一直过着我行我素的生活，爷爷的去世让他认识到没有去陪伴爷爷的遗憾，他决心去完成爷爷的遗愿，踏上了前往爷爷家乡云南普洱的旅途。 纪雅清和许念祖在普洱不期而遇，不打不相识的两人发现他们要找的竟是同一个人，于是携手踏上这段寻爱之旅。一路上，原本人生观、爱情观都完全不同的两人从摩擦不断到相互吸引，在共同见证了一段跨越时间空间的不渝爱恋之后，两人是否有勇气面对自己的感情……
Time is fluid in this far-fetched, whimsical western tale of music and love. Somewhere in the future past, The Man In the Black Hat hides out between heists at an old stagecoach stop with Jail Time, the Particle Kid, and an odd band of outlaws. Mining the detritus of past civilizations, they wait… for the Silver Eagle, for the womenfolk, and for the full moon's magic to give rise to the music and make the spirits fly.
The film starts with a masked killer entering an apartment and murdering a young couple, Krish and Shruti one cold, rainy night in Coimbatore. Five years later, Deepak, the retired police inspector who lost his leg while investigating the case, receives a call from a friend. The friend's son is adamant on becoming a police officer. So, the friend sends his son to Deepak so Deepak can brainwash him into not joining the force since his parents feels it is too dangerous. When the son arrives, he asks Deepak to tell him how he became crippled. Deepak begins to narrate his story of the final case that robbed him of the job he loved.
The film tells the story of three people for a year: a son (Magimel) diagnosed with cancer, a mother (Deneuve) suffering from helplessness and a doctor (Cécile de France) to do her job: One year and four seasons for these three characters to deal with the disease, to tame it, and to understand what it means to die while alive.
