S12 - Pandemic 2: The Startling

South Park Zone
South Park - Season 12 - Episode 1211 - Pandemic 2: The Startling
Watch South Park Pandemic 2:  The Startling online
South Park Pandemic 2:  The Startling

About this South Park episode:
Giant guinea pigs are attacking cities all over the world. The boys are lost in the Andes Mountains where they discover the startling secret behind the attack of the giant guinea pigs. The boys now have the power to rescue their town and the rest of the world from the onslaught but the Head of Homeland Security stands firmly in their way. Meanwhile, Randy bravely documents the destruction while trying to save his family.