When the Thorndyke adults leave for somewhere without leaving a sitter for Jillian, Pierce is forced to take her along to a dance on the Teen Club Yacht. With a makeover courtesy of Tara, Jett, and Bianca, Jillian tries to snare Troy for herself by following advice from the three girls and with Chester's help. When Chester begins using his weather-making machine (global setting still pending), all heck breaks loose on board. Fortunately, everything returns to normal, and after admitting that Chester's "rather cute", Jillian ends up dancing with him along with the other couples under a rainbow created by the machine.