Ever since they were little, identical twin sisters Janna and Callie have been fierce rivals. Each trying to outshine the other and spewing bad blood in the process. One fateful evening driving back from a family gathering, the girls have an argument, which leads to the car spinning off the road. Janna is incapacitated and Callie makes the decision to suffocate her sister putting her sister into a comatose state. After the accident, Callie starts to assume Janna's identity. While no one is able to tell the difference, Janna's daughter grows suspicious. 　　译文(2): 从小同卵双胞胎姐妹 Janna 和 Callie 就是死对头。每个人都试图让对方相形见绌，在这个过程中流露出不满的情绪。一天晚上，命中注定的家庭聚会结束后，两个女孩在开车回家的路上发生了争吵，结果车子开出了马路。Janna 失去了行动能力 Callie 决定闷死她妹妹让她妹妹进入昏迷状态。车祸之后 Callie 开始假扮 Janna。虽然没有人能够分辨出差别，詹娜的女儿开始怀疑。