萍的祖母去世时留下了十(shí )封尘封许(xǔ )久(jiǔ )的信，她嘱咐只有在写这些信的地(dì )方才能打开它们。于(yú )是萍就带(dài )上了祖母的骨灰(huī )踏上(shàng )了去往(wǎng )缅甸之旅。她在缅甸遇到了凯凯，只有(yǒu )他知晓祖(zǔ )母的存在。随后他们发现原来这些(xiē )信都是(shì )一个深(shēn )爱着(zhe )