London has a date who's very bright, so wears a radio receiver so that Maddie can send her intelligent things to say, but the scam is revealed and Maddy ends up with London's date.
London's father is furious about her non-attendance at school and transfers her to a Catholic girls' school. Maddy's unhappy as it's her school, and London's unhappy because the school has a plaid uniform.
The boys arrange a free cruise holiday for themselves and their mother. She's delighted, but they haven't told her it's only free if she sings on board every night.