How does the antagonist move the plot forward in this excerpt? nagaina moves the plot forward by running to the rat-hole, where rikki-tikki will destroy her. nagaina moves the plot forward by rustling her tail and turning her head round and round. rikki-tikki moves the plot forward by jumping up and down to confuse nagaina in their fight. rikki-tikki moves the plot forward by giving the egg to nagaina, thereby forcing her to run away.