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.