The railroad engines in Randolph Thompson's Red Valley Freight Line are threatening to burn up all the trees in Giant Pine National Park. Many of Thompson's engines are old coal-fired steam engines. Randolph pushes the engines hard so that they belch out volumes of smoke and sparks, setting the nearby dry forest ablaze.
Ranger Bill tries to get Thompson to either stop using the old coal burners or put spark arresters on their stacks. Thompson will not cooperate. What can Bill do to protect the forest and save the giant pines?
How does Bill live the Christian life in this story? Is anyone affected by Bill's actions and how?