Some of the men decided to eat the lotus and didn't want to leave. So Odysseus had to go onto the island and remove them. Tying them to the boat and leaving the island as soon as possible.
They went through a lot. One of the last steps before getting home was to go to the underworld.
Odysseus washes up on an island, talks to the king of the island. The king after hearing his whole story and everything that was going on agrees to help him return home.
After the war...
Odysseus has been away for 17-20 years. His wife Penelope has began to lose hope and suiters wanting her hand in marriage start to fill her home. When Odysseus returns home he sees this and wants to get them all out.
Who are these people and why are they in my house??
Odysseus has to get help from Athena to get these men out of his house.
I will help you get them out
Now that he is home he is going to shear what he has been through and learned. He will regain he power and have a relationship with his son.