在这部完美的助理犯罪/悬疑/惊悚片中,30岁的雷切尔是个完美的助理，对于她42岁的老板大卫。在过去的三年，她尽其所能去管理广告代理的事务。问题是...她已爱上老板。但她从来没有表白，因为大卫已婚并有一个年幼的女儿。当大卫的妻子38岁的卡罗尔患上脑炎后，雷切尔觉得这是个机会，于是前去帮助照顾卡罗尔，并接近他们的女儿。大卫欢迎雷切尔的帮助，但是大卫对她并没有感情，当雷切尔察觉到这一切时，悲剧即将发生……
CEO David Wescott greatly appreciates his trusted office assistant Rachel Parsons's efforts to help out in the Wescott household too when he loses his wife, leaving his child semi-orphaned after an ailing disease. Rachel stops at nothing to make herself seem indispensable in both spheres, aiming for her boss's exclusive attention. She's confident a business trip to New York provides the perfect opportunity for her to propose, but realizing she schemed to intrude his intimacy, he puts her in her place, planting the seed for spiteful revenge at a corporate dinner.
