青年建筑师Ray（方中信 饰）带妻子May（舒淇 饰）及5岁儿子子路(谭竣浩 饰)搬进新家的翌日傍晚，就有怪事发生，May带着子路在天台花园玩耍时，看到子路被强大力量离奇扯出天台，坠楼失踪。接着，May又频频听到小孩寻找母亲的哭叫声，更恐怖的，是家中无论子路的玩具还是衣衫都先后离奇失踪。 在警察的帮助下，Ray和May知晓导演这一切的，是躲藏在他们背后的神秘“怪物”（林嘉欣 饰）。而在与“怪物”争夺儿子的过程中，Ray和May渐渐了解到，神秘“怪物”在丑陋可怖的外表下掩藏着一个不为人知的辛酸故事。

　　Accomplished novelist Richard Sykes struggles to come up with a concept for a new book while trying to resolve his troubled marriage to Haley. In the process, he seeks out friends and colleagues to assist him in overcoming his personal demons that may servr to make him or break him.

　　东南亚某工厂在一次意外中挖出了被群蛇占据的墓穴，工厂惨遭蛇患，无数工人命丧蛇口。幸存者们组织捕蛇小队清理蛇患，却陷入更大危机.....