The initial rivalry between them turns out to bring them closer and they realize that they must be sisters .
Eleven years pass and the identical twins , Annie James and Hallie Parker , embark on their summer journeys not knowing each other .
The initial rivalry between them turns out to bring them closer and twins realize that twins must be twins .
Eleven years pass and the identical twins , Annie James and Hallie Parker , embark on their summer journeys not knowing each other .