The final story in a fantastical quartet from Sam Usher, featuring the much beloved Grandad and Boy duo.

Boy and Grandad are busy in the garden when they accidentally dig up a dragon's egg. Can they brave a bubbling river of lava, a stalagmite castle and deep, dark caves to return it to its nest in one piece? Luckily, Boy has the perfect plan to get it there . . .

With emotive and nostalgic illustrations, this is a thrilling tale to share with the whole family and the perfect gift for a grandchild. A celebration of the power of imagination and invention, Bang! is sure to whisk readers away on an amazing underground adventure.

Sam Usher's exciting new series puts Boy and Grandad's skills to the test as the pair recycle and reuse everyday items to create incredible inventions and ingenious new forms of transport as they find the magic in the everyday.