萍的祖母去世时留下了(le )十封尘封许久的信，她嘱咐只(zhī )有(yǒu )在写这些信的地方才能打开它(tā )们。于是萍就带上(shàng )了祖母的骨(gǔ )灰踏上了去往缅甸(diàn )之旅。她在(zài )缅甸遇(yù )到了凯凯，只有(yǒu )他知(zhī )晓祖母的存在。随后他们发现原来这些信都(dōu )是一(yī )个(gè )深爱着(zhe )