The opening portion introduces us to a turbulent week at Temple Camp characterized by relentless rain and flooding. Amidst the gloom, Tom Slade emerges as a competent and calm presence who realizes the severity of the situation when he suspects that the rising waters could endanger the incoming bus carrying fellow scouts. As the storm intensifies, the scouts engage in banter, oblivious to the disasters unfolding around them, until they spot a mysterious light atop a mountain that suddenly goes out. This sets off a series of events culminating in Tom and his friends trying to uncover the secrets of the camp, testing their scout principles of initiative, responsibility, and bravery, and setting the stage for the challenges and adventures that lie ahead. (This is an automatically generated summary.)