Eustace,Muriel, and Courage go to Nowhere Wet World in which they watch the famous Jojo the dolphin preform some stunts and tricks.The dolphin is mean to Eustace and spits popcorn in his face.Eustace complains about how he can swim better than Jojo.Eustace loses the first challange. Eustace and Jojo then make out an agreement for the next day. If Eustace would lose, Jojo could keep Muriel, in which she would have to live as a mermaid with him. Courage and Muriel give him some training at their house to get him ready. Courage eventually succeeds in making Eustace a good swimer. Eustace ends up winning the race against Jojo, because Courage hypnotised Jojo.