Brewster is given the task of transporting the huge tunnel-boring machine. A team of chuggers helps him, but one by one they all get called away or drop out. Meanwhile, Old Puffer Pete rounds up a bunch of small and not particularly strong chuggers.

Brewster is disheartened when they can't even budge the machine an inch. He thinks hard and musters up all his energy to motivate them with an inspirational chant. It works, and before too long they deliver the tunnel borer safely to the site. Zack is really pleased with Brewster and rewards him by letting him be the first one to break rock with the drill. Show less