The answer is: the story of the Trojan horse.
Demodocus is a character in Homer´s Odyssey. In the presence of Odysseus, although he is in disguise, he sings several songs that bring tears to Odysseus´ eyes. The last story that he sings, as requested by Odysseus, is the story of the Trojan horse and the taking over of Troy. The story tells of the ruse that the Greeks employed in order to gain access to the city of Troy and win the long lasting war against them. A select group of men, Odysseus, included, hid inside the horse as the Greek army pretended to sail away. The Trojans pulled the horse inside their city as a victory trophy, but at night, the Greek men hidden inside the horse crept out of the horse, open the gates to the city and the Greeks took over the city of Troy.
