Ice Age: The Meltdown

Life for the herd has been good. They live within a valley thats been surrounded in a wall, almost like a bowl and live in peace with other mammals. But when news come out that it's barely holding back water, meaning the valley could flood very soon.

Good news so that there is a way to escape the floods, but they're given three days at best to get there and avoid the floods.

Along the journey, the herd stumbles across new mammals, one who believes they're a possum like the other two, when they're actually a mammoth.

Will the herd travel there safely, no matter the obstacles, or will they end up becoming the meals of the unwary predators within the waters?