The Ice Age on Earth is finally coming to an end! As the weather grows warmer day by day, the animals are filled with joy. In this season of renewal, food is abundant, and life is carefree... 　　However, our three heroes from the first installment—Diego (the saber-toothed tiger), Manny (the mammoth), and Sid (the sloth)—sense a crisis amidst the universal celebration: as the planet gradually warms, the water levels are slowly rising. At this rate, the animals' homes will soon be submerged. 　　Thus, under the leadership of Diego, Manny, and Sid, the animals embark on another journey to find a new home. Along the way, there is plenty of laughter, but also many hardships. Will the animals ultimately overcome their challenges and discover a brand-new world?