Athena points out that Odysseus has been languishing on the Ogygia, trapped with Calypso for seven years. She declares that the great hero should be allowed to return home.
The Odyssey begins after the Trojan War when Odysseus sets sail to reach Ithaca -- His native land/home. It takes place in several different areas but mostly around Greece.
It is a VERY long poem thought to be written by Homer about a king named Odysseus after the Trojan war. It is a sequal to the Illiad. Great book! But you must have an appreciation for 500 page poems...