When Archie’s dad leaves, it throws his life into turmoil. He discovers there’s been a secret at the heart of his cosy family life - and he can’t accept the truth of that secret, however hard he tries. So, Archie heeds the siren call of the trains that run past the end of his garden. But when he finds himself at the track, he realises that the trains have been calling to someone else too. Someone Archie knows very well indeed. This is the story of what happens when they meet.