The Decepticons landed on Charr. They all were undergoing repairs after the pasting the Autobots gave them on Cybertron. Now that Galvatron was dead, Shockwave was now second in command. Megatron was now in full command.
"Once the repairs are finished, we will attack the Autobots and destroy them. They won't expect an attack this soon." Megatron said.
"Yeah, we haven't heard that one before." Nos thought to himself.
He walked out of the room. He encountered the ghost of Starscream in the corridor. The two have been conspiring against Megatron and Galvatron.
"The time is coming. You will have a body and we will destroy the Autobots and over throw Megatron."
"Excellent." Starscream said.
Inside the Ark, the Autobots were planning a memorial service for Ultra Magnus and Octane. They were also discussing the actions of Sigma Prime.
"You should have seen Sigma Prime up there." Ratchet said.
"Why's that?" Mirage asked.
"He faced off against Galvatron and Megatron. He knocked Megatron unconscious and deactivated Galvatron." Ratchet explained.
Just then Blaster came over the loud speaker.
"Don't touch that dial. Long range scanners picked up Decepticons and they'll be here in a little while."
"Man, I thought Wheelie was the only one that rhymed." Cliffjumper said.
"I am the only one but Blaster likes to join the fun." Wheelie said.
The alarm sounded.
"Decepticons! Autobots, battle stations." Sigma ordered. The Autobots ran outside.
"It's about time. I want to kick some Decepticon tailgate." Cliffjumper said.
"Ok Cliffjumper, let's start kickin' pig iron."
The Decepticons started firing and the Autobots took cover. They fired back at them. Megatron landed in front of Sigma.
"I'm going to permanently deactivate you." Megatron said.
Sigma Prime sighed.
"Wait, wait. I think I've heard this one before."
Megatron was furious.
"I challenge you to a one on one battle." Megatron proposed.
"I accept your challenge." Sigma Prime said.
He made a quick scan of Megatron, making sure he wasn't cheating like the time he faced off against Optimus Prime. The Decepticons and Autobots gathered around to watch the two mighty leaders face off till the permanent deactivation of one of them. Megatron charged at him. Sigma charged as well. They locked hands, trying to over take the other. Megatron threw Sigma aside. He fired his arm cannon at him. Sigma dove out of the way. Sigma fired his own arm lasers at Megatron. He nailed Megatron in the shoulder. Megatron charged at Sigma who charged again. Sigma punched Sigma in the throat and clothes lined him. Megatron hit the ground hard. Megatron's hand slid into his forearm and spiked ball on a chain replaced it. Sigma Prime did the same only his hand was replaced with a sai. Both of their weapons were made of Energon. Megatron ran and swung at Sigma. Sigma ducked and stabbed Megatron in his stomach. He pulled out and punched the Decepticon leader in the face. Megatron swung again and Sigma caught it in between two of the blades of his sai. He pulled and Megatron pulled back. Sigma pulled the spiked ball out of Megatron's wrist. Sparks flew out and Megatron stumbled back. Sigma did a roundhouse kick and kicked Megatron across the face. Megatron stumbled to the side then shot the ground in front of Sigma Prime, which threw Sigma to the ground. Sigma lied motionless. Megatron walked over to Sigma, crouched down.
"I told you I'd get another prime to fall before me."
Just then Sigma's hand shot up and grabbed Megatron by his throat. Sigma got up with Megatron's throat still in his grip. Sigma's eyes started to glow a bright blue.
"No more, Megatron."
Sigma started squeezing, crushing Megatron's throat. Megatron pulled at Prime's hands as the grip became tighter. Sigma completely clinched his fist, causing Megatron to go limp and hang there. Sigma threw the lifeless body aside and walked towards the Decepticons, who had astonished looks on their faces. Megatron began to get up. He started to raise his arm cannon. Sigma heard him. He spun around and a gun shot out from his forearm. He caught it and fired. The photon charge nailed Megatron in the upper chest. It sent a surge through his entire body. Sparks flew out of his joints, circuits ruptured, fuses exploded. The sound of circuits shorting out was heard through out the arena. Then his eyes exploded. Megatron fell back and this time he was dead. The Decepticons knew they were in for it now. They all jumped into the air and flew off. The Autobots cheered their new leader. Optimus even stood by and watched the event that had just taken place.