The night of the Harvest Festival is here, and the town is abuzz. A local newspaper prints an article about strange circles appearing in local cornfields. Rumors of an impending extraterrestrial invasion spread like wildfire, putting the festival in jeopardy--but the detectives are on the case, setting out to prove what, in fact, is the truth! The detectives return to Farmer Jenny's cornfield to discover the truth behind the mysterious crop circles, determine the facts of the case, and save the festival.