Paris, the 1980s. Three students decide to celebrate their graduation with a visit of the Paris catacombs. But something, someone, is hunting them. Trapped deep underground, the group needs to get out before it's too late...。真假千金互换，假千金代替真千金进入豪门，富豪爸爸却也将真千金一并带回，真假千金什么时候被发现，真千金又如何自保。。