Here's a breakdown:

* After the Trojan War: Odysseus and his men sail home, but they face many challenges and dangers.

* Poseidon's Wrath: Poseidon, god of the sea, is angry at Odysseus for blinding his son, Polyphemus. He sends storms to Odysseus's ship, causing it to be wrecked.

* Calypso's Island: Odysseus washes ashore on the island of Ogygia, where the nymph Calypso lives. She is captivated by his beauty and intelligence and keeps him prisoner there for seven years.

It's important to note that Odysseus's landing on Calypso's island is not his own choice. He is a victim of circumstance and Poseidon's wrath.