A circus is traveling across the country, Circus Pipo to be precise. When Pipo, Plom, and Klukkluk perform, a big scary man takes a keen interest in Plom and especially her ventriloquist dummy. When the dummy is stolen, the trail leads to the harbor. It turns out that the big scary man has kidnapped the puppet. Pipo, Plom, and Klukkluk follow the man onto the ship and get locked up in the hold. When they are released, they are captured by the crew, who turn out to be pirates. How did Pipo end up here again? Lubbeduh, the pirate captain, stole the puppet because it resembles his lost son, Takko. Lubbeduh takes our friends to his island, the Island of Yesteryear.