When the 19-year-old daughter of a UK politician is found dead in Sydney Harbour, cultures clash as a British and an Australian detective team up to solve a complex murder mystery. But this international investigation will expose more than murder, as the two detectives begin to uncover a conspiracy with political consequences.

After her husband's abrupt death, Alice seeks solace with his remaining family — descendants of a leading researcher on demonic possession. As her in-laws transform one by one into creatures that feed on fear, she comes to discover that the vows she took in life survive even in death.

九岁的女孩“星期一”住在悉尼，由父亲鲍勃在家中教育。她唯一出门的机会就是每周一去医院检查。“星期一”的想象力被月亮岩石（乌鲁鲁）所吸引，她想到澳大利亚中部去探险并相信这种岩石能治愈她的疾病。命运的捉弄让她卷入了警察的对十六岁男孩泰勒，一个诡计多端的街头男孩的追捕。泰勒利用星期一来躲避警察，但是他俩仍然很快成了朋友。他们决定去北部寻找乌鲁鲁。在内陆旅行的途中，他们遇到了不少挫折，也有幸运的事情。同时，父亲正在不顾一切地赶在探长前面寻找女儿，被警察抢先是要出人命的。剧情在澳大利亚的腹地达到最高峰，这是一个温暖的结尾和一次动人的友谊之旅。