According to legend, St Patrick drove the snakes out of Ireland. In this book, he is helped in this quest by three mice who bravely retrieve St Patrick's bell from a crafty snake. It's a nice way of introducing children to the legend, and since St Patrick is indeed dressed as a Bishop in the book, it also serves as a good conversation starter on Bishops and Catholic Saints so parents can delve into the true story of St Patrick. The story itself is nice, and he illustrations are beautiful. I'd recommend it.