Mariah Carey is involved in a mix-up at the veterinarian's office that results in her monkey Francois working at the Proud Snax factory. Meanwhile, Oscar's chimp Mr. Chips goes on to live the pampered life of a pop star's pet.
Penny and her classmates experience culture shock when their teacher assigns them to spend time in homes of classmates of different nationalities. Penny's initial awkwardness when visiting a Pakistani family who's fasting during Ramadan gives way to an appreciation of the Islamic faith.
Wizard Kelly organizes a televised talent contest featuring celebrity judge Alicia Keys, and LaCienega decides to enter it. But Penny suspects that the wannabe pop idol isn't above cheating to win.
After Mongo, a famous wrestler, takes ill at the hands of Proud Snacks, Oscar is forced to step into the ring to defend Mongo's belt. Oscar, now known as “Mama's Boy,” does so with the help of his tag-team partner, Suga Mama. Ironically, Mongo ends up having to fight Oscar to get his belt back.
