Zack and Rex really want to play in the Zerby Town sand pit but it is too small for them both to fit. They decide to go down the forest trails sand pit and to get more sand to make it bigger. After Rex dumps the first load, they realize it will take forever. Zack offers to help but is only a little truck. Nevertheless Zack and Rex try, try again to fill the pit. Zack finds Lily in the middle of the trail, trying to keep Zerbies from running over a flower. They try to think of ways to protect the flower, while still keeping the trail open. Rex tries putting a rock in the middle of the path, but it still isn�۪t the right solution. Can they figure out a way to protect the flower without slowing any Zerbies down? Axle, Zack and the Construction Zerbies set out to build the best jump ever. One that lets Axle jump high enough to go over a tree branch and far enough to go over a mud puddle. But they realize in order to build the shape of the jump just right, they�۪...