Oedipus play was "Laius", the second was "Oedipus", and the third was "Seven against Thebes". Only the third play survives, in which Oedipus' sons Eteocles and Polynices kill each other warring over the throne. Much like his "Oresteia", this trilogy would have detailed the tribulations of a House over three successive generations. The satyr play that followed the trilogy was called "The Sphinx". As Sophocles' "Oedipus Rex" begins, the people of Thebes are begging the king for help, begging him to discover the cause of the plague. Oedipus stands before them and swears to find the root of their suffering and
Oedipus Rex mother, and shed/With [his] own hands the blood of [his] own sire"". Desperate to avoid this terrible fate, Oedipus, who still believes that Polybus and Merope are his true parents, leaves Corinth for the city of Thebes. On the road to Thebes, Oedipus encounters Laius and his retainers, and the two quarrel over whose chariot has the right of way. The Theban king moves to strike the insolent youth with his sceptre, but Oedipus, unaware that Laius is his true father, throws the old man down from his chariot, killing him. Thus, Laius is slain by his own son, and