Liberty Johansen is going to reinvent the way we look at the night sky. Most people only see the classic constellations - things they've been told to see. But Liberty sees new patterns, pictures, and possibilities. She feels she's on a different planet. Other planets in her solar system include: Her dad, who gave her the stars, who's drifted and is keeping secrets. Her mum, who's not imploding, like everyone expects. And her sister, who seems in a galaxy of her own. Liberty feels like gravity is collapsing around her. Can she save her system, before she spins off into oblivion?