"Tansy is a teen who is stuck with the job of driving her little sister, Teera, around town. That was the deal Tansy's parents made with her in exchange for getting a car. When Teera interrupts Tansy's texting session, asking for a ride to the library, Tansy agrees but says they must hurry. In her rush to get home, she gets into a car accident that sends both girls on a trip to places that are very far away--not just in distance but in time. It's not clear whether they'll ever get home. .