How do the characters in scene 4 contribute to the plot of 'Antigone'?
It is by setting in motion and bringing about Creon's reversal that the characters in scene 4 contribute to the plot of "Antigone" by Sophocles (495 B.C.E. - 405 B.C.E.).
Specifically, Teiresias the blind prophet and the Chorus leader are the characters who interact with Theban King Creon in the fourth scene. Teiresias makes Creon's reversal possible by warning him that the mourning that goes around Thebes will come back around to Creon's own household. The chorus leader then puts the reversal in effect by successfully counseling Creon to annul the non-burial edict, bury Polyneices and free Princess Antigone.