The Dark Lord has entered the Emperor's throne room. He walked up to the Emperor and knelt before him. "Rise," the Emperor said, and Vader obediently stood upright.
"You have been keeping secrets from me, Vader." Vader does not move, nor does he flinch. "You have not kept me informed on these wormholes you have discovered."
"I apologize, Master," Vader said half-heartedly.
The Emperor, noticing peculiarities in his apprentice's behavior for the last several months, has looked through his personal files, and found the ones that concern the wormholes. Once he came upon Vader's personal file detailing his trip to the land of smoke and fire, and coming upon the Ring of Power, he knew that he must see this ring for himself. He looks down and notices the Ring on Vader's hand. This was the strong sensation he felt in the Force once he arrived on the Death Star. It also called to him, stirring within him the desire to possess it.
"Let me see that Ring." The Emperor pointed to Vader's hand, expecting him to be obedient.
"No," Vader said. Tension building within him as he knew what direction this path would take.
"What did you say?" the Emperor demanded, shocked by what he has heard.
"I said no. The Ring belongs to me," Vader answered defiantly.
Emperor Palpatine rises from his seat, his anger building. "How dare you disobey me? You shall give me the Ring at once!" The Emperor's hand stretched out with his palm open.
"I shall take it to my grave," Vader shouted, knowing that he could no longer turn back.
"Then you shall have your wish," the Emperor growled. Palpatine raises his hands, releasing Force lightning upon Vader. Vader activates his lightsaber and uses it to deflect the lightning. Now it is his turn and he returns with his own blast of energy flying towards the Emperor. The Emperor knocks the energy to the side.
"You shall regret this insubordination," the Emperor spat.
"I no longer require you as my Master." Vader hurls another volley of energy at his former master. The Emperor deflects this second attack and then sends a constant stream of lightning hurtling towards Vader. Vader uses his lightsaber to deflect this attack. While the Emperor is concentrating on his lightning attack, Vader frees his left hand to grab the Emperor by his feet with the Force and knock him off balance.
Palpatine falls to the floor. Vader approaches his former Master, glad to take the opportunity to be rid of him once and for all. The Emperor attempts to raise himself up, only to be knocked unconscious by another blow of Force energy from Vader. Now standing over the Emperor, Vader plunges his lightsaber through the chest of his former Master.
Vader steps forwards and sits on the Emperor's throne. Pressing a button on the panel next to him, it activates a subspace transmitter that sends a live message out across the Galactic Empire to all military vessels and installations.
"Emperor Palpatine has died. I, Emperor Vader, now take my place as his rightful heir to the throne." With control over the Imperial Navy, and being virtually worshipped by the Stormtrooper Corps, none would be able to oppose him.
