What happens when society wants you banged up in prison for a crime your parents committed? That’s the situation in which Ant finds herself – together with her little brother Mattie and their foster-parents – she’s locked up in a new kind of family prison. None of the inmates are themselves criminals, but wider society wants them to do time for the unpunished ‘heritage’ crimes of their parents. Tensions are bubbling inside the London prison network Ant and Mattie call home – and when things finally erupt, they realise they’ve got one chance to break out. Everyone wants to see them punished for the sins of their mum and dad, but it’s time for Ant to show the world that they’re not to blame.