The Odyssey ends with the slaughter of the suitors. Here is what happens in books 17, 18, 19, 20, 21, 22, 23, and 24 in Homer’s Odyssey.
The Odyssey books 13-16. What happens when Odysseus reaches Ithaca? Who is Eumaeus and where is Telemachus?
What is going on in books 11 and 12 of the Odyssey? Ghosts, sirens, sea monsters, and Zeus create new obstacles for Odysseus.