萍的祖母去世时(shí )留下了十(shí )封尘封许久的信，她嘱咐只有在(zài )写这些信的地方才能打开它们。于(yú )是萍就带上了祖母的骨灰踏上(shàng )了去往缅(miǎn )甸之旅。她(tā )在缅甸(diàn )遇到了凯凯，只(zhī )有他(tā )知晓祖母的存(cún )在。随后他们发现原(yuán )来这些信都是一(yī )个深爱(ài )着(zhe )