Outside the Esoterraka warriors Davis and the others were outside on another roof keeping an eye on them to see if they were up to anything since they believe Diaboromon is a gift from a being named Dagon.
"Anything yet?" Davis said as he was being inpatient.
"Nothing. It's hard to figure out what the Esoterrakas are up to." T.K. said.
"There's a piece of the puzzle missing." Kari said. "What could they possibly be up to if they can disappear and have Diaboromon?"
"This is a waste of time." Zane said.
"I'm with you." Davis said. "Diaboromon can't defend himself and is completely vulnerable. We should take him out right now."
"We can't just go rushing in." T.K. said. "We need to figure out what plan they have with Diaboromon. Plus if Diaboromon hasn't told them he's not related to this Dagon then he's up to something too."
"All the more reason to take him out." Davis said.
"Yeah Motomiya, let's take them down." Zane said as he absorbed the stone from the roof and Davis used the ultimatrix.
"Halsemon!"
Zane hopped on Halsemon and they flew over to the Esoterrakas' base.
"No guys wait." Kari said, but Halsemon already blasted the wall and they were both inside and there weren't any guards with Diaboromon.
"Back already Motomiya." Diaboromon said.
"Back to finish you once and for all." Halsemon said as he transformed.
"Tyrannomon!"
Zane turned his hands into spike maces and Tyrannomon had his claws ready, but before they could do anything they were blasted in the back. When they turned they saw Keru with some warriors.
"We had a feeling you would show." Keru said.
"Listen this guy isn't a minion of this Dagon. He's a digimon of evil." Tyrannomon said.
"Don't try to fool us." Keru said. "Attack, do not let them damage the minion." The warriors disappeared and reappeared attacking them.
"I got them." Zane said as he tried to swing his spike maces, but the warriors kept doing their disappearing trick.
"Hold still." Tyrannomon said as he started to stomp on them, but they kept moving. Some even ran up invisible stairs and started to blast him. Kari and T.K. made it in and saw what was happening.
"Why won't these two learn to be patient?" T.K. said. "How are those warriors doing all that crazy stuff?" Kari's eyes began to glow and saw how the warriors were doing it.
"Somehow they're crossing into another dimension." Kari said.
"I don't have time for this." Tyrannomon said. "I'm taking out Diaboromon right now."
"Protect me!" Diaboromon said as more warriors appeared and blasted him.
"Guys let's just get out of here while we can." Kari said. Tyrannomon and Zane ran off. T.K. tossed a small device and landed on one of the warriors and left.
"Don't go after them. We have found Dagon's heart. Now we must retrieve it and when we do the great one can be revive." Keru said. Davis and the others managed to get away and find cover.
"That was close." Zane said.
"Why don't you two stop and listen to me?" T.K. said.
"Who knows when we'll have a chance to take out Diaboromon?" Davis said.
"You guys are just lucky I placed a tag on one of the warriors." T.K. said and brought out the map on his badge. "It looks like they're heading towards the woods."
…..
The Woods
Zane was driving through the woods tracking the tag T.K. placed on the Esoterraka warrior while T.K. navigated.
"Are we there yet?" Davis said.
"What's wrong? You've been acting inpatient all day." Kari said.
"It just bugs me. Diaboromon is still alive and we have a chance to finish him." Davis said. "But as long as those guys are guarding him it's difficult. Speaking of which why don't we attack while Diaboromon is still back there?"
"We have to figure out what the Esoterraka are up to so we know how to stop them." T.K. said. "Wait I think we're here."
"Are you sure, look at this?" Zane said as they were just outside an Ever Knights' castle.
"One of the Ever Knights' castle, why would they come here?" Davis said.
"One way to find out." Kari said as they went in and it looked like a battle went on with some knights and warriors down.
"Looks like they ambushed the knights." T.K. said.
"If you ask me, even if they did, the knights went all out. It's as if they were ready." Zane said. They kept walking around and Kari noticed a book.
"Hey guys listen to this." Kari said. "It looks like that octopus thing we saw at the Esoterrakas' base and a member of the Ever Knights did battle."
"Battle?" Zane said.
"Read what it says." Davis said.
"Long ago a knight known as George wielded a mighty sword." Kari said. "He battled a monster that controlled minds and had creatures with the same trick. It sounds like that ludicova we fought. The controlled ones battled against the knights, but it ended when George cut out the monster's heart and it was sealed away."
"Cut out the heart!" T.K. said.
"How could something live without a heart, so why seal it?" Zane said.
"I don't know, maybe that creature was this Dagon." Kari said. "The Esoterraka see him as a god. Maybe he could live without one."
"So apparently these guys have history." T.K. said.
"I bet that's what's sealed away in that plate we found the Ever Knights dug up." Davis said. "The heart must be some kind of key or something."
"Then we better get to it first." Zane said. They ran down the halls and saw some knights were fighting off the warriors.
"This is our chance." Davis said.
"How are we going to get past that?" Kari said.
"Zane time to do some pounding." Davis said.
"Ooh sweet." Zane said. Zane absorbed stone and Davis used the ultimatrix.
"Andromon!"
"Kari can you put up two shields on both sides to block any blast?" Andromon said.
"I got you cover." Kari said.
"Belom Qwiaos."
Kari brought up two stone walls on both sides and held it up with her magic. They ran through the fight with the walls blocking any blast and any knight or warrior in front of them Andromon or Zane just pounded them away.
"The whole castle must be a battlefield." T.K. said.
"If they are looking for this heart, where could it be?" Kari said.
"We'll have to search the whole castle." Andromon said as they made it through the fight.
"Hey stop!" Zane said and they stopped in front of a big door. "It's got to be behind here."
"How can you tell?" Kari said.
"There must be something important behind a door this big." Zane said.
"Well we have to start somewhere." T.K. said as he kicked the door and it slid open showing a sword in a stone with a green heart through it. "Yep this is it."
"Oh I think I'm going to be sick." Kari said not liking what she was seeing.
"If this thing is so important then let's destroy it." Andromon said.
"That's not going to happen." They saw on the other side of the room was Keru.
"Not you again." Zane said.
"You are enemies of the great one. You will not stop his return." Keru said.
"Gatling Attack."
Andromon fired his missiles, but Keru disappeared causing the missiles to miss and when he reappeared he tossed fire balls pushing them back. He reached for the sword and pulled it out and vanished.
"He took the heart." T.K. said with Davis turning back.
"We better head over to that seal." Davis said.
…
The Seal
The Esoterraka warriors already arrived at the seal and had Diaboromon with them. When Keru held up the sword the heart began to glow.
"It won't be long now." Keru said.
"The great one will be pleased." Diaboromon said keeping his cover pretending to be a minion.
"Keru stop!" He turned to see Davis and the others.
"You again." Keru said.
"Keru bringing this Dagon here won't change the world for the better." Davis said.
"He'll just control the innocent." T.K. said.
"Don't interfere." Keru said.
"I'm afraid we have to." Davis said as he used the ultimatrix.
"Mercurymon!"
The warriors fired their flames, but Mercurymon was able to reflect them. Diaboromon was able to pull himself out of the tank with one arm. He grabbed the sword and tapped it against the seal and it glowed.
"Diaboromon what are you doing?" Mercurymon said, but before he could answer he was surrounded by light and disappeared with the heart and the sword dropped.
"Yes it's only a matter of time." Keru said and the warriors disappeared with Davis turning back.
"Now what do we do?" T.K. said.
"Is Diaboromon gone?" Kari said.
"You heard what that Keru said." Zane said.
"Dagon will be coming and we don't know what we're up against. What we're going to do is a good question." Davis said.
"You don't need to worry about that." They saw old man George.
"Who are you? What are you doing here?" Davis said.
"Earth's hope." George said as he grabbed the sword and he was in a bright light that covered him in armor and his hair turned blonde. He was young again. "Let the beast come.