The first part of Odysseus the Immortal trilogy takes place in Ithaca almost a decade after Odysseus’s return. Upon his arrival in Ithaca, Odysseus slayed his wife Penelope’s insolent Suitors, the men who resided in his palace during his absence. After the King's return, Poseidon, angered by Zeus’s decision to let Odysseus live in peace, sent to Ithaca a major earthquake and malicious plague that killed hundreds. Now, he torments Odysseus with unsettling nightmares. Penelope is also unsettled, and travels by ship to Delphi to consult Pythia the Oracle about what has befallen her city, her house and her husband. In the meantime, Polybus, Oenops and Aegyptius, the bastard sons of three of Penelope’s Suitors, decide to avenge the death of their fathers by poisoning Odysseus at Telemachus’s wedding to Harmonia, the younger daughter of Menelaus and Helen, conceived right after the two reconciled in Troy.