The dragon and her boy

When Stick discovers there is a dragon living underneath the streets of London, he finds himself unintentionally drawn into an epic adventure and a quest - but how can he find a place for a dragon to live in London when dragons aren't supposed to exist? And with foes at every corner who want to exploit the dragon for themselves, it's going to take a daring plan for Stick to find a safe place for his dragon - and for himself.