When she was 19, Mercury Prize-winning rap artist Speech Debelle walked out of her family home and became homeless for three years. In this moving documentary, she shows that being homeless isn't just about down and outs sleeping in cardboard boxes, but is a problem which affects more and more young people in Britain today. Speech gets to know four young people from very different backgrounds - all of them sofa surfing or sleeping rough - as they try to find a more permanent roof over their heads. She discovers that councils and charities are struggling to cope with this growing crisis and she investigates the impact on young people's lives.