Prompted by the return of terminators into their lives, Sarah and John Connor decide to stop running and focus on preventing the launch of Skynet. They are aided by Cameron, a terminator who poses as a student at John's school, and transports herself and the Connors into the year 2007. With not only the terminators, but also FBI agent James Ellison out to get them, they set out to try stopping Skynet, once and for all.