An extraordinary night in the life of an ordinary young man. It's me, Mum. I lost my key. Let me in before I do something unhygienic on the doorstep. In the small hours of Sunday morning, trapped on his own doormat, a young man talks. By turns hyper, reflective and defensive, his remarkable story gradually reveals the life-changing truth of what can happen when responsibility hits at 100 miles-an-hour.