After receiving a mysterious letter, a woman travels to a desolate island town and soon becomes trapped in a nightmare.。春运期间，怀孕的林珊回老家参加母亲葬礼，本想着就一站高铁，不会出什么大问题。没想到遇到了吴母这对奇葩祖孙，不仅占了林珊的座位，还侮辱、殴打她把母亲送给林珊的遗物长命锁摔坏。。