Big Truck and Little Truck worked on Farley's farm. Big Truck taught Little Truck everything he knew, including how to carry crops, how to stake scarecrows, and even how to pull his wheels out of a muddy rut in the road. Big Truck could do anything. But one day, Big Truck's engine won't start. A tow truck comes to take him away to the shop, leaving Little Truck frightened and alone. Will Big Truck be okay? Can Little Truck manage all by himself?