Real-life siblings Alyson and Amanda Michalka -- who cut albums together under the moniker Aly & AJ -- star as two spoiled sisters who are forced to work on their father's dairy farm as penance for what was nearly a disastrous mistake on their part. At first, the girls' biggest concern is that their hair will smell like cows -- and that they're nowhere near the mall. But eventually, they come to respect the family business and learn a lesson.