I looked up a synopsis of Antigone since I had never seen the play.
Basically, Creon, the king, wants to bury Etocles properly (he was on his side) and humiliate Polyneices (rebelled against him). Antigone wants to bury Polyneices properly even though it is against Creon's orders. She does anyways and Creon figures out that it was Antigone. Ismene also commits to the crime to die alongside her sister. He decides to spare Ismene and bury Antigone alive in a cave. Tiresias prophesies that Creon will lose a son, because he did not properly bury Polyneices and left Antigone to die underneath the Earth (which is apparently bad). Creon, afraid, decides to bury Polyneices and release Antigone. Eventually, Creon's son Haemon kills himself, because initially Creon would not listen to him to try and save Antigone's life. Also, Antigone and Eurydice (Creon's wife) have killed themselves. He is still king, but Creon has acted against the gods and has thus lost his son and wife.
I wish I would've watched the play, because it sounds very interesting.