Ah-lun is struck dead by lightning, and when he goes to the underworld, he has no memory of his previous life. He has a choice to make: to reincarnate, or to become a god and share the workloads on the earth. After training, Ah-lun takes on the job of god of love. He teams up with Pink Lady and binds countless men and women together with red strings to pass on the love pollen while trying to find out what happened to him with the strong deja vu he has. Day by day, Ah-lun found out that his biggest task is to tie this red string on his best loving woman Xiao-mi with someone else and that will separate them for eternity. 有些事，一万年也不会变... 惨遭雷击而死的阿纶 (柯震东 饰) 来到阴间，生前所有的记忆归零。他必须做出选择：投胎转世却可能变成蜗牛；或是担任神职，累积阴德再修转世为人的正果？阿纶决定成为月老新鲜人，他与个性爆冲的粉红女Pinky (王净 饰) 搭档，来到人间执行任务，当阿纶遇见狗狗阿鲁以及牵着他的主人小咪 (宋芸桦 饰) 时，他前世的记忆都回来了，小咪就是他生前的挚爱。阿纶希望能帮助阳间的小咪寻得新的姻缘，但每一条绑在小咪手上的红线竟然都被烧毁！原来，有些事，一万年也不会变…