On a routine flight as couriers of serum to a hospital, Chuck and P.T. fly over a young boy all alone way up in the foothills of a mountain range. As they watch the young man from the air, he appears to be disoriented so they land to see if he is okay. When they discover that he is delirious, they load him in the Bell 47G and take him to the hospital. After he is treated for shock and heat exhaustion, only then do the pilots learn from him that he was part of a threesome who were camping. Chuck and P.T. now must rush back into the air to see if they can learn the fate of the other two.