Because of the large storm, Odysseus and his men were stuck on Helios's island for thirty days. Circe told Odysseus that they could not eat the cattle or they will be cursed. This left them starving until some men became desperate and ate some.
After his men ate the cattle, they chose to leave the island. Zeus's lightning bolt hit their ship causing it to break and kill all of the men, Odysseus being the last one alive. This is the part of the journey where Calypso let Odysseus stay on her island.
CROSSING OF THE RETURN THRESHOLD
Odysseus finished telling his story. He is gifted a ship home with men that will ride with him.
Odysseus rides with some men to get home.
When Odysseus arrives home, he meets his son to tell him his plan. Odysseus is going to pretend to be someone else so he can kill the suitors later.
Finally, Odysseus kills all of the suitors with his bow. He is happy with his wife and son.