The unsolved case of two girls who disappeared from the Pyrenee town of Monteperdido five years ago is reopened when one of them reappears.

一名在纳粹集中营里担任归档工作的加泰罗尼亚囚犯，利用职务之便，偷走了记录纳粹暴行的照片底片。本片改编自真实事件