Kerrie feels trapped. She can't spend another day in her chaotic mother's house. Then Kerrie finds an escape. On the rooftop of a nearby tower block live two castaway teenagers, Mauve and Skip. As Kerrie starts to share their sky-high home, she relishes her new-found freedom. And when a freak fire destroys their towerblock, Kerrie decides to leave the city with Mauve and Skip. She thinks that she can leave her problems behind in Glasgow but what will happen when Kerrie stops running?