Iphigenia is a Greek tragedy by Euripides, and has been adapted into several films. In the story, Agamemnon seeks the help of the oracle at Delphi in order to determine why the winds are not blowing. The oracle tells him that the only way to appease the gods and allow the wind to blow is to sacrifice his daughter Iphigenia to the goddess Artemis.
Agamemnon, torn between his duty to his army and his love for his daughter, hesitates to carry out the sacrifice. His wife Clytemnestra, who is fiercely protective of her daughter, initially tries to dissuade him. However, when she realizes that Agamemnon is still willing to go through with the sacrifice, she plots revenge against him.
In some versions of the story, Iphigenia herself is aware of the true purpose of the sacrifice, and willingly agrees to die for the sake of her country. In others, she is deceived by her father and only discovers the truth at the last moment.
The themes of the story include the conflict between duty and personal relationships, the burden of leadership, and the idea of sacrifice for the greater good. It is a powerful and tragic tale that has resonated with audiences for centuries.