The recently released DVD, Ice Age: The Meltdown, is packed with tons of special features, and that’s a wonderful thing, because they are, for the most part, far more interesting than the film which they accompany (save for the Scrat segments, but those are far more interstitial segments than part of the main storyline).
Fun for the first five minutes, the sequel to Ice Age picks up shortly after the first one left off. We find the world melting, and Sid, not very successfully, running a day camp. It quickly becomes apparent to the animals that the valley they are living in is going to flood due to the melting of a glacier that is holding back a massive lake of water. A vulture informs them that a boat exists at the far end of the valley and that if they make it there in 3 days (when the glacier will apparently be weak enough to no longer hold back the water), they will survive.
So, off all the animals go. But, just as they’re starting out Manny is informed by other animals that he is the last Wooly Mammoth. Though he doesn’t believe this at first, he does soon become worried. Quickly though this problem is rectified as he, Sid, and Diego meet Ellie, another Mammoth. Sadly though, Ellie believes herself to be a possum, like her “brothers,” Crash and Eddie. Sid suggests they all continue to the other end of the valley together, and they are once again off.
They, predictably, wander here, there and everywhere and make it to the boat just in time. Sadly though, Ellie becomes trapped as rocks create a cave around her and Manny has to save her. The glacier becomes unstable, the valley floods, and I’m not going to ruin the ending, but tons of Wooly Mammoths do eventually appear.