Scrat comes across a time machine and is transported to various times all in pursuit of his beloved acorn.

When Sid's attempt to adopt three dinosaur eggs gets him abducted by their real mother to an underground lost world, his friends attempt to rescue him.

Manny, Diego, and Sid embark upon another adventure after their continent is set adrift. Using an iceberg as a ship, they encounter sea creatures and battle pirates as they explore a new world.

Scrat is captured by Scratazons who take away his acorn. Now, Scrat must rescue his acorn and escape before the aliens catch him.

When Scrat's acorn sends an asteroid to Earth, the Herd must find a way to stop the asteroid from hitting Earth with the help of a returning friend.