"How nice it would be to have a sister", Anna often thinks... At 9 years old, little Anna with an overflowing imagination spends her afternoons off in an imaginary world that allows her to overcome the difficulties she meeting in her family and at school. One day, everything changes. While she is hiding in the school photocopier, the machine turns on and creates a replica of herself: a second Anna! Now one can go to school while the other has fun - and no one notices, so begins an exciting game of misunderstandings and confusion!