A hot-shot race-car named Lightning McQueen gets waylaid in Radiator Springs, where he finds the true meaning of friendship and family.
After Lucas Nickle floods an ant colony with his watergun, he's magically shrunken down to insect size and sentenced to hard labor in the ruins.
Manny, Sid, and Diego discover that the ice age is coming to an end, and join everybody for a journey to higher ground. On the trip, they discover that Manny, in fact, is not the last of the woolly mammoths.