As king, Plok dwells on Akrillic, a large island in the fictional archipelago of Polyesta. Plok wakes up one morning and notices his big square flag on the pole on his house's rooftop has been stolen, and goes out searching for it. He spots the flag on Cotton Island from far away and sails to it to find the flag. Plok mistakes some imposter flags for his own, becoming irritated in the process. Plok encounters the two giants creatures who are responsible for placing the fake flags, the Bobbins Brothers, who Plok's grandpappy had warned him about, and fights them.