What was there in the play oresteia trilogy play?

The Oresteia trilogy, written by Aeschylus [458 BC] consisted of three tragedies:

Agamemnon,

Choephorae and

Eumenides

That describe the return of Agamemnon from the ten year war of Troy and his death, the reunion of Orestis with Helectra and the revenge for the death of their father and finaly the end of the curse of the house of Atreides.