Rex lives at the Tower of London and likes nothing better than sniffing around juicy litter bins. But his favourite bin of all isn't just a litter bin - it's also a time machine. He jumps in and he's transported back to Hampton Court Palace during the English Civil War, where he meets Rogue, Charles I's favourite pet. Rogue tells Rex that her master is imprisoned somewhere in the palace. Can Rex help the King escape?

When a raven from the Tower of London goes missing during the Blitz, it's up to scruffy dog Rex to rescue him, with a little help from some royal corgis and Princess Elizabeth. Rex lives at the Tower of London and likes nothing better than sniffing around in juicy litter bins. But his favourite bin of all isn't just a litter bin - it's also a time machine. He jumps in and he's transported back to the London Blitz - where his friends the ravens are really hungry! When Gripp, the royal raven, doesn't come back from a food-finding mission, it's up to Rex to rescue him. But when the trail...