Diego, Manny and Sid return in this sequel to the hit animated movie Ice Age. This time around, the deep freeze is over, and the ice-covered earth is starting to melt, which will destroy the trio's cherished valley. The impending disaster prompts them to reunite and warn all the other beasts about the desperate situation.

A small group of friends are faced with the sudden tragic death of one of their own when he commits suicide, leaving the remaining six in a free-fall of attempting to find out why.