Like in the book, because Helen was taken by Paris, the Achaeans demanded to take her back and conquer and make Troy fall. The movie only shows the important details and the book, and changes the flow of the story to make it more beautiful and appropriate for their theme. After viewing the movie, there are lot of differences between the book Iliad and the movie Helen of Troy. Like in the movie, Achilles is one of the faithful followers of Agamemnon but in the book, Achilles disgusts him and didnt participate in the war until Patroclus was killed by Hector. Also in the movie, Hector didnt seem to participate in the battle but in the book, he is the one who leads the soldiers of Troy. There are a lot of differences on the movie and the book but still, they both show how Troy has fallen because of one woman.
The Greeks are plotting to invade Troy to steal the treasures of the Trojans. Meanwhile Prince Paris is assigned by his wise father and King of Troy to travel to Sparta and shows the peaceful intentions of his people. Along his journey, he falls into the sea during a storm and is rescued on the shore by the Queen of Sparta, Helen. When he recovers, he believes that she is a slave and they fall in love with each other. When he arrives at the Spartan palace, he is arrested by King Menelaus but Helen helps him to escape. They travel together to Troy and give the excuse the Greeks need to start the war and put Troy under siege for years. The Greeks are unsuccessful in their intents, until they listen to the cunning Ulysses. The Greeks then withdraw their one thousand ships from the Trojan waters and offer a wooden Horse of Troy as a gift to the winners.