萍(píng )的祖母去世时(shí )留下了十封尘封许久的信，她嘱咐只有在写这些(xiē )信的地(dì )方(fāng )才能打开它们。于是(shì )萍就带上(shàng )了祖母(mǔ )的骨灰踏上(shàng )了去往缅甸之旅。她在缅甸遇(yù )到了凯凯，只有他知晓祖母(mǔ )的存在。随后他们(men )发现(xiàn )原(yuán )来这(zhè )些信都是一个深爱着