She wakes in a grey, silent corridor with no memories, no name, and no way out.

A mysterious girl appears with a desperate warning: find the mistake you were sent to fix, or remain lost forever. Before she can ask questions, she is pushed through a door and tumbles into someone else's life.

Now she is Kate Cavanagh, a fourteen-year-old student teacher at a tiny bush school in 1900s Australia. The world is harsh and unfamiliar. Children walk miles barefoot through mud to learn. Teachers strap students for spelling mistakes. And girls have almost no choices in life.

Her new friend Becky knows this better than anyone. Kind-hearted and clever, Becky dreams of something more, but her father has arranged her marriage to a neighbouring farmer, and she will turn sixteen in two weeks. In this world, a daughter belongs to her father until she belongs to a husband. There is no escape.

Kate does not belong here. Her sharp tongue and modern ideas make her an outsider. But she cannot stand by while Becky's future is decided for her, even if speaking up earns her bruises, even if helping might mean she never finds her way home.

What is the mistake she was sent to correct? And what happens if she fails?

A gripping time-slip adventure about courage, friendship, and discovering where you truly belong.