The kids and their Digimon companions were just returning to the Nigh Plains after retrieving Lincoln's artifact and defeating NeoDevimon.
"This is so awesome!" said Lincoln as he holds Koromon in his arms while he looks at his artifact.
"RizeGreymon was so cool!" said Clyde.
"He was okay, but he wasnt nearly as cool as GrapLeomon." said Rusty.
"You got that right." said Elecmon.
"You really need to do a good drawing of RizeGreymon in your journal, Lincoln." said Zach.
"I plan on doing that when we get back to Floatia." said Lincoln.
"When do you think we'll get back to our world?" asked Stella with a bit of homesickness in her voice.
"I don't know." said Liam.
"There has to be a way to get back." said Clyde.
"I wish we knew more about the boundary between our two worlds and a way to get through it." said Stella.
"In the meantime, we need to be careful." said Lincoln. "Who knows if any more of Titamon's goons are on the loose."
"I'm sure we can handle any of them." said Rusty. "We all have our artifacts."
"Yeah, but we don't fully understand how to use them." said Stella.
"Hopefully we'll figure something out." said Clyde.
Just then, dark clouds started to appear in the sky over them.
"That's weird." said Lincoln. "These clouds just showed up out of nowhere."
"We should find some shelter before it starts to rain." said Clyde.
All of a sudden, a massive bolt of dark green lightning shoots down from the sky and hits the ground in the middle of the Nigh Plains.
"Whoa, Nelly." said Liam.
"That was intense." said Kudamon.
"I wonder if any Digimon were hurt." said Clyde with concern.
"We can go check it out if it'll make you feel better." said Lincoln.
"Thanks, buddy." said Clyde.
"Let's make it quick before it starts pouring." said Zach. The kids and their Digimon partners head to the area where the lightning hit. As they got closer to it, they start hearing a large number of voices.
"Is someone over there?" asked Stella as she and the others got closer to where they were going.
"Sounds like a lot of someones are over there." said Lalamon.
"Maybe it's my fan club?" suggested Rusty.
"I doubt you have that many imaginary fans, Rusty." said Zach.
The group soon reaches the spot where the lightning bolt hit and were amazed to see a large horde of Digimon standing in the middle of the Nigh Plains.
"Look at all of them!" said Koromon.
"Some of them look like bad news." said Gaomon.
"Yeah, especially that one." said Gotsumon, pointing at Titamon who was standing in front of the other Digimon.
"Titamon! Titamon! Titamon!" chanted the other Digimon.
"That's Titamon?" asked Koromon. Lincoln points his artifact at Titamon.
"That's Titamon all right." said Lincoln. "Mega Level, Shaman Type, Virus Attribute; special attack, Soul Core Attack."
"Man; look at the size of that sword of his." said Liam.
"Who's that babe next to Titamon?" asked Rusty, pointing at Lilithmon. Stella points her artifact at Lilithmon.
"That's Lilithmon; Mega Level, Demon Type, Virus Attribute." said Stella. "Special attack; Phantom Pain."
"I wonder if she's single." said Rusty.
"What are they doing here?" asked Lincoln.
"My army!" Titamon shouts out. "The moment we've been waiting for is finally here! With the energy I've spent years gathering into my sword, I will use it to cut through the barrier of our world's dimension and make our way into THE HUMAN WORLD!"
"He's gonna bring all those Digimon to our world?!" said Clyde.
"And once we arrive, we will lay waste to it and rule over all who live there!" said Titamon.
"No way!" shouts Lincoln as his artifact glows which Digivolves Koromon to Agumon.
Titamon then lifts up his sword and it starts giving off a massive amount of energy; he then slashes the air behind him, leaving a massive opening in it. When Lincoln gets a look at the hole that Titamon made, he sees some familiar sights.
"Is that the Burpin' Burger sign?!" asked Lincoln.
"That's Royal Woods!" said Clyde.
"Titamon's gonna attack our hometown?!" asked Rusty.
"And everyone who lives there?!" asked Zach.
"And my family's livestock?!" asked Liam.
"And our families?!" asked Stella.
"Not if we have anything to say about it!" said Lincoln.
"Let's get them!" said Rusty. The kids' artifacts start to glow and they push the buttons on them, making their Digimon Digivolve to their Champion Forms. They all rush over to where Titamon's army was.
"Hey, ugly!" shouted Lincoln, making Titamon look towards him.
"Ha, ha; you looked." said Agumon. An Airdramon among the horde suddenly chuckles, making Titamon look towards it.
"Did you find that amusing?" asked Titamon as he holds his sword towards the Airdramon, making it tremble in fear.
"N-N-No, Titamon!" said the Airdramon. "I-I-I..." Before it could finish, Titamon swings his sword, slicing the Airdramon in half; as it disintegrates, his scattered energy is drawn into the massive blade.
"Anyone else want to laugh?" Titamon asked his army who shake their heads in response.
"How could you do that to your own friend?" asked Gotsumon.
"He was a minion, not a friend." said Titamon. "And who are you?!"
"Those are the children I've told you about before Lord Titamon!" said Cerberusmon Werewolf Mode.
"Who's that guy?" asked Zach. Clyde points his artifact at Cerberusmon Werewolf Mode.
"That's Cerberusmon Werewolf Mode." said Clyde. "Ultimate Level, Dark Animal Type, Vaccine Attribute; Special attack, Inferno Divide. Looks like Cerberusmon got an upgrade."
"So, you're the human children who destroyed Phantomon, MetalTyrannomon, and NeoDevimon." said Titamon, pointing at the group.
"Hey, they tried to destroy us!" said Clyde.
"Now I have a question for Lilithmon over there!" said Rusty.
"What is it, human child?" asked Lilithmon.
"Do you have a boyfriend?" asked Rusty as he smiles goofily at Lilithmon, making her cringe.
"Rusty!" the rest of the group shouts out.
"This is not the time to flirt!" said Clyde.
"She's evil!" said Stella.
"I don't judge." said Rusty.
"Could someone destroy these fools while the rest of us head into the human world?" asked Titamon.
"Allow me, Lord Titamon." a large, gray, bipedal, stag beetle-like Digimon with red markings on its body, and pincers on the ends of his arms steps forward.
"Who's that guy?" asked Liam. Zach points his artifact at the Digimon.
"That's Okuwamon." said Zach. "Ultimate Level, Insectoid Type, Virus Attribute; his special attack is Duo Scissor Claw." Okuwamon charges at the kids' Digimon.
"Horn Impulse!" shouts GeoGreymon as he charges at Okuwamon, but it swings its arm and knocks GeoGreymon aside.
"Double Claw!" shouts Gaogamon as he swings his front claws at Okuwamon, but it blocks them with its arms. It grabs Gaogamon with its pincers and slams him onto the ground.
"Lion Sword!" shouts Leomon as he charges at Okuwamon with his sword.
"Rock Punch!" shouts Golemon who also charges at Okuwamon with a fist raised.
"Duo Scissor Claw!" shouts Okuwamon; it grabbed Leomon and Golemon with each of its pincers and began squeezing them.
"Lion Claw!" shouts Reppamon as he leaps at Okuwamon with his front paws raised; Okuwamon throws Golemon at Reppamon, hitting him, and sending them both to the ground; it then tosses Leomon aside.
"Sunshine Gun!" shouts Sunflowmon as she fires seeds at Okuwamon, but it blocks the seeds with its forearms; it charges at Sunflowmon and rams her with its head, knocking her to the ground.
"Finish them now, Okuwamon!" shouts Lord Titamon as his army continued to enter the opening into the human world. The kids' Digimon begin to get up.
"We can't let Titamon get to our world!" said Lincoln.
"He'll destroy everything we care about!" said Clyde.
"We have to stop him!" shouts Stella. As the kids determination rises, their artifacts start to glow.
"Guys, look!" said Zach as he and his friends look at the artifacts.
"They're reacting to our emotions." said Stella.
"Okuwamon's heading our way, guys!" said Clyde. Everyone looked to see Okuwamon getting closer.
"Let's take this exterminator's nightmare down!" said Lincoln as he and his friends push the buttons on their artifacts, Digivolving their partners to their Ultimate Forms.
"Time for a little pest control!" said RizeGreymon as he and the other kids' Digimon charge at their incoming opponent.
"Duo Scissor Claw!" shouts Okuwamon as he thrusts his pincers towards RizeGreymon.
"King of Fist!" shouts GrapLeomon as he punches at one of Okuwamon's pincers, knocking it aside.
"Winning Knuckle!" shouts MachGaogamon as he punches Okuwamon's other pincer aside.
"Solid Strike!" shouts RizeGreymon as he swings his revolver arm at Okuwamon and hits it, sending it flying to the ground.
"Yeah, swat that bug!" shouts Lincoln. Okuwamon slowly gets up and starts charging at the group again.
"Destructive Impulse!" shouts Okuwamon as he swings wildly at the group.
"Someone needs to chill out for a while." said Clyde.
"Lovely Cologne!" said Lilamon as she releases a sweet-smelling aroma from her flower hands that washes over Okuwamon and bewitches it.
"That was so cool, Lilamon." said Rusty as he smiles goofily at Lilamon.
"Big Bang Blow!" shouts Meteormon as he punches upward, striking Okuwamon below its jaw, making it fly up.
"Wind Cutter Sword!" shouts Chirinmon as he flies up towards Okuwamon and pierces its chest with his horn. Okuwamon lets out a loud scream as its body disintegrates.
"Way to go!" cheered Liam.
"They exterminated that bug!" said Zach. Okuwamon's pieces were suddenly aborbed into Titamon's sword.
"Never send a bug to do a Mega's job." said Titamon. "Oh well, at least Okuwamon kept you busy while my army entered your world." The group saw that Titamon's army was no longer in the area.
"Guys; is it just me or is that hole getting smaller?" asked Stella. The boys looked to see that the hole leading to Royal Woods was indeed shrinking.
"As much as I would like to waste my time battling you all; I have a whole new world to conquer." said Titamon.
"Not if we have anything to say about it!" shouts Lincoln.
"Stop him, guys!" said Clyde. Their Digimon partners charged at Titamon who suddenly swings his sword, releasing a shockwave from it and it hits the Digimon, sending them flying while they returned to their Rookie Levels and landed on the ground.
"Whoa; all he did was swing his sword!" said Zach. Titamon turned towards the shrinking hole and walks through it.
"Stop!" shouts Lincoln as he runs towards the hole. Unfortunately, by the time he got to where it was, it was gone.
"Oh, man." said Rusty.
"What do we do now?" asked Stella.
Lord Titamon and his forces have escaped to the human world. Will Lincoln and his friends find a way to return to their world and stop him? Wait and find out.