A boy and his dad are spending the day at the beach, and the boy is listing all the things his dad is not scared of (crabs, jelly fish, sharks…), but at the end he says there’s only one thing he is afraid of, but since the boy isn’t, that makes them heroes together.  It is the left to the illustrations to imply that the one thing Dad is scared of are seagulls stealing his cap.  From he beginning of the book, the seagulls are seen throughout, offering a bit of foreshadowing.  It’s fine, but not spectacular.  The illustrations are more substantial than the text.