The Ducks raft out to Rupert’s Bunion, a tiny rock in the sea, 100 yards from the beach. Donald wants to have an undisturbed picnic here. A sudden earthquake makes the water and their raft disappear. The wise nephews realize at once that they are in danger of a tidal wave and hurry to the safe coast with their uncle. However, slippery algae, pinching crabs and hungry seagulls are true obstacles. Donald even gets smudged by an octopus. When a huge tidal wave washes the Ducks ashore Donald decides to have the next picnic in the kitchen.