Odysseus is trapped on the lush island of Ogygia, by the nymph Calypso at the beginning of The Odyssey.
Ogygia
Calypso
The cyclops
When the Odyssey begins, what is unique about Odysseus is that he has been away from home for 20 years, fighting in the Trojan War and facing many challenges on his journey back to Ithaca.
Sacked the city of Troy
in medias res
Odysseus finally reaches Ithaca in the 13th book of the Odyssey.
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.
keeping Odysseus prisoner on her island and preventing him from reaching home
Poseidon
Starting in medias res
Odysseus begins plotting his revenge once he learns of the suitors, but he does not start killing them until Book XXII, after threading his bow, and shooting it through the twelve axes' handles.