Bats at Bay

'You'll have to go-o-o-o-o!' hoots Onllwyn the owl. It's just as Bryn and Betsi feared: their tree has been marked for clearance, and now the whole of the bat family will have to move. Bryony, Bethan and Boyo are sure they can find the perfect home, but life in the big city may not be quite as straight-forward as they think!