Momma parrot is teaching her young-uns to say "Polly want a cracker" but little Peter doesn't want a cracker, he wants to be a sailor like dad. Mom tells him what a no-account his dad really was, setting sail for Hawaii ("no, Maw, it was Catalina") right after the kids were born. Peter is unswayed, and takes off. He turns a barrel into a boat, and crews it with an annoyingly talkative duckling, then sets sail on a lake. They get caught in a thunderstorm (the duck loves it). Peter calls for help and momma comes running, but the duck has already saved him. But he still wants to be a sailor.
