一名前外交官从国外回到西西里岛，向警方报告了他刚刚发现的一个奇怪的事情。第二天，警察督察Lepri来到该男子的住处，发现他已经死亡。他自杀了吗？在进行调查时，Lepri碰巧怀疑自己的专员——与此同时，一列火车因信号失灵而停在农村的某个地方。一名司机决定通知站长，但他和另一名铁路特工也被发现死亡。对于警方来说，司机必然与这些神秘的死亡事件有关。

1936, Italian army is invading Ethiopia. Lieutenant Silvestri suffering toothache decides to reach the nearest camp hospital. But the lorry has an accident and stop near a rock, so Silvestri continues by walk. On his way he meets and rapes a wonderful young Ethiopian. He also wound her when he shot to a wild animal, and later kills her to avoid further pain. When he finally reaches the hospital, he realizes he gets probably leprosy. Trying to escape from Ethiopia Silvestri will kill again. But surprises aren't still over.