The song “Walk the Dinosaur” is playing and a zoom of Snow Valley is shown. Sid is sleeping when he hears several roars, then he wakes up and says, “What?” Then he sees, Momma fighting Rudy, then Buck is up on a cliff and yells, down to Sid, “Don’t Move!” Then he slipps and slides down the hill, triggering an avalanche. 20,000 years later Manny, Sid, Diego, Ellie, Crash, Eddie, Buck, Momma, Rudy, Peaches, Scratte, Scrat, Egbert, Yoko, Shelly and two guanlongs are frozen in ice, and the security guard accidently turns the heat up, before he turns the lights off. They all thaw out except for the guanlongs and Rudy, Sid tries to open the door and he trips over something, which makes a loud bang, and Sid yells, “Owwww!” Then Manny says, “Come on Sid, Be Quiet.” Then Buck yells, “Everybody hide