The poem follows a war leader’s prolonged return to his island home after a great conflict, tracing his sea voyages, ordeals, and the divine interventions that shape them. Episodes recount encounters with monsters, sorcery, and seductive detentions, while a parallel strand follows his son and wife coping with invasive suitors and trying to preserve the household. The narrative contrasts cunning and endurance with brute force, explores hospitality and its abuse, and dwells on the yearning for home and the interplay of human choice and divine caprice. Its structure alternates episodic adventures with domestic scenes and councils that reveal shifting loyalties and strategy.