Synopsis: Manny the mammoth, Diego the sabre-tooth tiger, and Sid the sloth set out on their greatest adventure yet when circumstances cause an entire continent to be set adrift. Separated from the rest of their pals, they're launched on an epic seafaring quest using an iceberg as a makeshift ship. 

Along the way the gang are challenged to do the impossible as they heroically deal with exotic sea creatures, explore a brave new world, and battle ruthless pirates.

Meanwhile, Scrat's reunion with his cursed nut launches him to places no prehistoric squirrel has gone before.