A scientist performing illegal stem cell research is trying to find a cure for cancer. After the transfer of shark cells is made into a human test subject, the ill man gets well again and it looks like the treatment was a success. But the experiment goes wrong, and the man transforms into monster: half-shark & half-human. But the scientist knows how to use this to his advantage...。姐姐因感情上被离弃的痛苦,变成了“黑寡妇”般的杀人狂。妹妹从美国返港发展,不知姐姐有此嗜好,她们均对住在隔壁的靓仔发生兴趣。吴嘉丽的好友为了告知姐妹两人的心事,故意探访秦豪,却发现秦豪失踪。警探吴大维进行周密的调查,发现了可疑之处。。