Odysseus goes to sleep after a very long time and his men open his bag hoping to find treasure or food and let out the bag of winds that pushes the boat back across the other side of the world where they figure out how to get home by talking to Circe.
Odysseus goes to the underworld to talk to a blind prophet, Tiresias, to get guidance for the rest of his journey home.
Odysseus and his men continue to home but his men begin to starve so they stop at an island to find food and Odysseus tells his men not to eat the cattle there but they do anyway so Zeus strikes their ship and all of his men leaving him to wash ashore to to Phaeacia where Alcinous gives Odysseus everything he needs to get home. (There was no B.C. boats use imagination)
Alone, Odysseus is finally home but notices suitors at his kingdom so he disguises himself instead of going straight to battle to better his chances. Doing this he learns there's a contest to be the new groom of Odysseus' wife so Odysseus talks to his son and his trusty servants that agree to help Odysseus.
Odysseus shows he outgrew his older life by gaining intel and receiving help before going straight to blood and ignorance and has now defeated the suitors with the help of his son, Athena, and his helpers from locking everyone in and taking out each suitor one by one with the bow after winning the contest.
After Odysseus has slain all the suitors and Penelope now being alone with "this man," wants to know if it is really Odysseus so she brings the maid to move a bed and he says it can't be moved and only her and Odysseus knew that about the bed so they reunite and live happily ever after.