Penguin Blue is back, in a swashbuckling new adventure about pirates, treasure, and friendship! A pirate hat. A sunny day. For Penguin Blue A game to play. Your favourite Penguin and his friends are back in a new adventure, and this time they're pirates - ARRRRR! Sailing the seven seas in search of treasure, Captain Blue and his friends are unexpectedly SUNK! But with a shipwreck to explore and a mysterious stranger on a desert island to meet, they might still find some treasure after all...The fourth book from the award-winning, bestselling picture book star Rob Biddulph.