Captain Captain is wearing her Proper Pirate Proficiency badge and Seaweed realises he doesn't have one. It's revealed that he will have to pass the Proper Pirate Proficiency Test or he'll have to leave the pirate crew! Sandy steps up to help coach him.

Captain Captain's uncle Joe King is coming to visit. Uncle Joe is the best joker in the family, and Captain Captain has got a big plan to play a joke on him. But things go a little wrong when Sandy and Seaweed try to help out!