One day, Irish giant Finn McCool spots Scottish giant Benandonner across the sea and they immediately begin arguing about who is the best giant of all. Despite the wise advice of Finn's wife Oona, they decide the only way to settle their feud is to fight. But to meet, the boastful giants must first build a causeway across the water...

Inspired by Celtic folklore, best-selling Scottish children's author and storyteller Lari Don weaves a tall tale of rivalry and foolishness that recounts the origins of Northern Ireland's world-famous Giant's Causeway and its connection to Scotland's Isle of Staffa. Emilie Gill's light-hearted, characterful illustrations of the legendary giants will captivate young children.