Old secrets can weigh heavy when you want to fly.
Invited to a one-off spectacular show by Slimwood's Stupendous Travelling Skycircus, Lily, Robert and mechanical fox Malkin can't wait to jump on board.
But behind the daredevil deeds of the bewitching bird-girl and the lobster-handed boy, something sinister lurks. And soon, the watchful ringmistress, Madame Lyons-Mane, reveals a deadly plan for Lily. Could the secrets of Lily's past hold their only chance of escape from this terrible trap?