Milk
(Movie)

The study group decides to take a Biology class together, but Pierce soon faces problems when only six seats are available in the class. Jeff quickly makes enemies with their professor (Michael K. Williams) and is removed from the class. Dean Pelton, meanwhile, finds a new rival in Vice Dean Laybourne (John Goodman), the dean of the renowned Air Conditioning Repair Annex.

Peter and Lois decide not to vaccinate Stewie, but when Brian tries to persuade them to get Stewie vaccinated, it ends up leading Peter and Lois to join the anti-vaccination movement. Meanwhile, Stewie ends up in some trouble when a pandemic hits Quahog.

In order to promote the Pawnee Zoo, Leslie decides to marry two of their resident penguins as a publicity stunt. However, when both penguins turn out to be male, she inadvertently causes an uproar among the townspeople.

When the Springfield Nuclear Plant springs a leak, snow comes to the town for the first time in years and out-of-towners come to spend their holidays, causing stores to raise their prices. To combat this (and earn extra money for the holidays), Marge turns her house into a boarding house for travelers.