The tower, the zoo, and the tortoise

When Balthazar Jones is tasked with setting up an elaborate menagerie within the Tower of London's walls to house the many exotic animals gifted to the Queen, life at the Tower gets all the more interesting. Penguins escape, giraffes are stolen, and the Komodo dragon sends innocent people running for their lives. Balthazar is in charge and things are not exactly running smoothly. Then his wife Hebe decides to leave him and his beloved tortoise "runs" away.