As she said that, Trigon came out of the crystal. Trigon levitated in front of the shell of Ego's brain. He knew what he had to do and thus used his heat vision of his four eyes on the shell.
Meanwhile Quill confronted Ego about his mother and soon the truth came out as Ego spoke of his true purpose. He thought he would be able to be calm when his father would admit it but he lost his cool.
He used his gun on his father instantly.
"Who do you think you are?" Ego got angry when he was shot. Even though he was shot nothing actually happened to him. As Ego started using his power to make Quill his battery, he trembled.
"What did you do?" Ego said.
"Aren't you a god? We have a god too for ourselves. We specifically hired his services to kill you." Quill said.
"You knew about all this?" Ego was surprised when Quill said that.
"We always knew of your plans but it was me who was naive to think that my father wasn't that bad as my friend had described. Suffice to say, you turned out to be more bad than I thought. It's good we had a plan for you from the beginning. Black Winter is coming and here you are trying to take over the world instead of defending it. You are nothing but a selfish jerk." Quill said.
Ego didn't know what Black Winter was but he knew he would die soon if that beast wasn't stopped from penetrating the shell of his brain. Trigon was already close to penetrating the inner part of the shell. He stopped attacking Quill and vanished.
"Yeah you better run! Hey Damian he is coming, watch out." Quill said in his communications.
Ego appeared near Trigon and changed himself to a huge humanoid, the size of Trigon, which was made out of rocks in the surroundings.
He proceeded to attack Trigon with this hand from behind. Trigon sensed the oncoming huge hand, he turned back and he swatted the rocks with his bare hands.
"It's been a long time since someone fought me of my size. It will be fun." Trigon said.
Meanwhile as Ego was busy fighting against Trigon, Quill and others reached the place where Ego's brain was. There was already a huge hole on the shell and Raven and others were dismantling the small bits to install a bomb and blow it up.
As Ego was fighting Trigon, he also saw Raven and others were trying to get inside the shell. He sent his tentacles trying to stop them. And thus on both sides the fight ensued.
Here a huge body was facing Trigon and there tentacles that were made of his nerves were trying to stop them.
"Puny god, you have some audacity to ignore me and try to stop my daughter." Trigon said as he got angry and directly used his heat vision on the huge humanoid being created by Ego. This dismantled Ego's false body instantly.
The Trigon flew over to Raven's side and defended them while they installed the bomb.
"Daughter, you all should leave. I will defend the bomb." Trigon said.
"Are you sure about that? You will die in this explosion." Raven said.
"I will teleport by your side when the explosion occurs. I am an old god, such an explosion won't even scratch me." Trigon smiled.
Quill and the others had already reached by their side. And they heard the whole conversation.
"This guy is your father?" Quill asked.
"Yes." Raven said.
"And I thought I had daddy issues." Quill mumbled.
"Stop bickering. Let's go. We have lived on this goddamn planet long enough." Gamora said.
Everybody then proceeded to arm themselves with Kryptonian suits with jets to escape while Trigon was defending the bomb. Even though he could kill the brain with his heat vision but in order to be sure that Ego dies, Rocket was adamant on using his huge bomb. And they weren't sure how the planet would crumble after killing the brain so they had to leave no matter what.
So everybody agreed to this plan of Rocket which they had hatched yesterday night. As Trigon was defending the bomb, others directly used their suit's jet to fly up where a small drop ship was waiting for them. There was a timer on the bomb like in the original so they had to leave fast.
And like the actual story, Drax did pick up Mantis while they left as she tried to warn them before about Ego, and since they knew the whole story from John, they knew she was a good person for trying to warn them and thus took her to safety too. Thus everybody were in the FOA when the bomb exploded.
As opposed to expectations, after the bomb detonated the planet didn't blow outward but just crumbled upon itself. There was no huge explosion. They saw the planet lose its color, and Trigon teleported near the FOA. Apart from small scratches on his skin which was healing, there was nothing wrong with him.