When it is thought that Flapjack has fallen in love with a girl named Sally Syrup, Peppermint Larry and Captain K'nuckles hoping to profit from the arrangement, by stealing the lovehearts that pop out of his head. Flapjack and Captain K'nuckles are swindled by a mysterious man named Ben Boozle, and are forced to work on his ship until Flapjack is able to achieve the rank of captain.