Barnacle is bored by the monotony of the tides, and envies the fish who swim freely--until an eel comes along.

After saving a little crab from being hit by the shark bus, a young fish is proclaimed a hero and becomes an assistant crossing guard.

Mr. Fish and Willa Whale are on their way to a birthday party, but Willa is worried about fitting in so Mr. Fish shows her how to overcome her social anxiety by tackling the worries one at a time.