A local scientist, Dr. Henderson, comes to the Daily Planet with a proposition for Perry White. Several decades earlier, Dr. Henderson's father discovered a series of caverns that he named the "Henderson caves." The elder Dr. Henderson explored the caves for several years before he mysteriously disappeared in them. Now, the younger Dr. Henderson would like to go back into the caverns. He would like the Daily Planet to fund the expedition, and he would like Clark Kent and Lois Lane to come along and report on everything they find. Mr. White agrees.