Odysseus's call to adventure is when he learns that he has to travel to Troy to fight the trojans.
Although he doesn't really show it in the movie, Odysseus wishes he didn't have to go to Troy because he wants to be with his wife, newborn son, and kingdom.
Tests, Allies, and Enemies
Odysseus crosses the threshold when he first goes to Troy. He leaves his known world of Ithaca, and enters an unknown world that is going to change him.
Belly of the whale
His most significant supernatural aid is Athena. She helps him throughout the journey by helping him before he fights the Trojans, when he is stuck on Ogygia, and when he arrives back in Ithaca. He also receives help from Hermes and Aeolus.
Odysseus's allies are his men. He faces many trials, which each have many enemies. These are the island of the cyclops, against Polyphemus, the island of Aeaea, against Circe, the Underworld, Scylla and Charybdis, and the island of Ogygia, against Calypso.
His low point was right after facing Scylla and Charybdis. Most of his men were still alive until he fought them, but they killed them all, leaving him stranded in the middle of the ocean floating on a piece of wood alone.