Will Clifford and Emily Elizabeth win their race across Birdwell Island? Clifford and Emily Elizabeth are learning all about Mars! When Emily Elizabeth and her friends read about the Red Planet, they think it sounds exactly like the red rocks down by the beach on Birdwell Island. Emily Elizabeth and Samantha decide to race their friends Jack and Pablo -- the first group to the beach wins! But when Clifford gets stuck in the mud, will Emily Elizabeth lose the race?