A college freshman moves into the perfect dorm on campus, but soon discovers the previous resident died under mysterious circumstances. Believing the girl was murdered, she tries to uncover the identity of the killer before it's too late…

根据海岩同名长篇小说改编。安心（孙俪）是云南边陲小镇南德的一名缉毒女警，待要与相恋多年的、在外地做记者的男友张铁军（房斌）结婚时，她遇见帅气阳光的毛杰（何润东），与之迅速坠入爱河。不过在无意间发现毛杰是毒贩后，安心回归理智与毛杰分手，但她已怀上毛杰的骨肉。不久安心与铁军结婚。某次执行任务时，安心和队友一举歼灭了以毛杰父…