Replying...
Intro. It was the final battle. The battle that will make the end of the Quintesson war. All of this was meant to be a secret meeting. It started when the Primes received a message from Sentinel, where he claimed to have intercepted an enemy transmission. He told them he possessed intel about the Quintessons that could greatly benefit the Primes in the ongoing war. The thirteen were to meet Sentinel for his sensitive intel in a cave at the surface of Cybertron, a secluded and well-hidden place. They expected Sentinel to be there with the intel he promised. If only they knew in time. This wasn’t a gathering. It was an ambush. Now, Megatronus Prime stood beside his fellow Primes, back to back with them as they formed a circle of defense. He raised his staff in preparation as they began to hear rumbling around them. He looked up as the rumbling got louder, and finally, Quintessons poured out from the open roof, crawling over the rocky ceiling and shooting at the Primes as they went.

Megatronus Prime

@Evan