Cuchulainn, one of the main mythological heroes of the Irish epic, turns out to be dead. His legal wife Emer and his beloved Etna Inguba are trying to bring him back to life. But the spirit that can bring him back to life sets the condition that Cuchulainn will come to life only if Emer gives up hopes that he will love her again. She, who has endured infidelity their entire life together, suddenly feels jealous. It is at that moment when she must give up the hope of returning to her former happiness, which has supported her all this time. And Emer has to agree, because this is the only way to save her loved one.