In the end, the group discovers that the boat is actually a Noah's Ark-like vessel that can save them and their friends from the floodwaters. With Buck's help, they manage to find the boat and secure a spot on board, ensuring their survival and the survival of their friends.
To survive, the herd must travel to the other end of the valley within three days to reach a legendary "boat" that can save them—a journey that parallels the story of Noah's Ark.
. Directed by Carlos Saldanha, the film follows the original "herd"—Manny the mammoth, Sid the sloth, and Diego the saber-toothed tiger—as they face a looming natural disaster. Ice Age Wiki Plot Overview
Don't worry, I'll do my best to write a coherent essay about the movie, while ignoring the file description part.