Many years have passed since the events set forth in Oedipus the King. For some time after his fall, Oedipus had remained at Thebes: but at last the Thebans, moved by Creon, decided to expel him; and his sons did nothing in arrest of that sentence. His daughter Antigone went forth from Thebes with her blind father, his sole attendant: Ismene stayed at Thebes, but was watchful there in her father's interests, and on one occasion brought him secret intelligence. After his expulsion, his sons were at first disposed to resign all claim to royal power in favour of their uncle Creon. But afterwards they fell to striving with each other for the throne; and Eteocles, the younger brother, gained it. Polyneices was driven out of Thebes. He went to Argos, and there married the daughter of King Adrastus; with whose support he is now preparing to march against Thebes.
Meanwhile an oracle has come from Delphi to Thebes. If Thebes is to prosper, the grave of Oedipus must be in Theban soil. If that grave be in Attica, Athens will prevail against Thebes. Thus the wanderer, old, blind, and destitute, carries with him a mysterious blessing of the gods on the place where he shall find rest.