What is the plot of Sophocles Oedipus Rex?

In Oedipus Rex, the plot begins with
the people of Thebes facing a plague on the land. The oracle claims that the plague will
end when the murderer of King Laius is found and punished. Oedipus, as king, cares about
his subjects. He is the first to exclaim that he will see to it that King Laius'
murderer is found, vowing to curse and drive out the
murderer.

The prophet Tiresias is summoned. He wishes to
say nothing until Oedipus makes him angry by accusing him because of his silence. In
anger, Tiresias blurts out that Oedipus is the pollution in the
land.

A messenger comes to tell that the King of Corinth is
dead. Believing this to be Oedipus' true father, the prophecy stating that Oedipus will
kill his father is proved wrong. But the messenger adds some disconcerting
news:

The
messenger tells him that Polybos was not his father and that he, a shepherd, had been
handed the child Oedipus by another shepherd, one of Laius's men. Jocasta tries to
intervene and stop the
revelations...

As Jocasta
begins putting the pieces of the puzzle together, she can not bear the thoughts of being
married to her own son. She hangs herself.

Oedipus blinds
himself with the pins from her dress. He is led away into exile. The plague is
stopped.