When disaster strikes and a tunnel the machines are digging collapses, Pillar, the biggest bulldozer, is left trapped in the rubble. Only a small opening is left at the tunnel entrance and the only one who can fit through the opening is Skid-who is afraid of the dark.
Now it's up to the tiniest tractor to save the day. Can Skid find the courage to do what he was made to do and prove that he doesn't have to be big to be mighty?Recommended for ages 4-7.