The Three Generals are summoned by Bagramon for a council meeting in which Reapmon also makes an unwanted appearance. Lord Bagra states the appearance of Mikey Kudo is a worse threat than the Blue Army, and Tactimon offers to handle the situation. From there, Tactimon releases MadLeomon from prison with last chance to redeem himself via a plan involving Drimogemon digging under the Village of Light to enact the mythical Day of the Rising Ground. By that time, after settling on their logo, Shoutmon tries to think up a name for Mikey's army when large shoots of bamboo suddenly erupt from underground. Unfortunately, Jeremy gets caught by one of the bamboo spires, causing him to be suspended high in the air.
As Mikey attempts to rescue his friend, he is confronted by a mysterious youth who introduces himself Christopher Aonuma. Christopher proceeds to reveals the Bagra Army's hand behind the attack and offers aid in return for Mikey becoming his subordinate. Mikey ignores the offer to continue saving his friend while Christopher mentions something called a "Code Crown". Refusing to let him insult Mickey further, Shoutmon and his friends try fighting MailBirdramon but Christopher digifuses a MailBirdramon with Golemon to overwhelm Shoutmon. Upon seeing Christopher and MailBirdramon discard Golemom like unwanted trash once he served his purpose in the DigiFusion, Mikey declines Christopher's offer on the grounds that he does not value his Digimon. Christopher then departs on MailBirdramon to watch the fight unfold alongside the mystery girl as MadLeomon attacks the Village with a trio of Apemon and a Pteramon. Though Shoutmon X2 is formed, MadLeomon absorbs the Apemon to become MadLeomon (Final Mode) and overwhelms Shoutmon X2 using the bamboo as leverage.
With Cutemon appearing to help rescue the villagers, Dorulumon supports Shoutmon X2 as Mikey remembers Dorulumon from his dream. Upon being told by Jeremy of a shiny area within the bamboo, Mikey digifuses the Starmons to make the Rare Star Sword for Jeremy to throw. With the Drimogemon now dead, the bamboo retracts and MadLeomon is quickly defeated, but he begins to expand a suicide maneuver. Recalling his dream once more, Mikey digifuses Shoutmon, Ballistamon, and Dorulumon into Shoutmon X3, who knocks MadLeomon far enough into the sky to prevent any damage. In their victory Mikey decides on a team name to reflect the bonds of their members: the Fusion Fighters. As the Fusion Fighters celebrate, a gold diamond appears in the sky from MadLeomon's data. The mystery girl, introducing herself as Nene Amano, appears and reveals the object within the gold diamond is a "Code Crown".
(Numbers indicate order of appearance. Bolded characters are fought by the protagonist(s), and italicized characters feature non-explicitly, e.g. voice, silhouette, image.)
Dorulumon Type: Beast Special Moves Drill Bit Blitz Drill Tornado Spiro-Drill
Monitamon: "Dorulumon Profile. He is a Beast-Type Digimon. His special attacks include "Drill Bit Blitz", "Drill Tornado", and "Spiro-Drill". He can shoot drill bits from his head! Talk about having a screw loose! I wonder if he can fix my Internet connection? Finally, a handyman I can trust!"
In the English dub, when Mikey digifuses Starmon and the Pickmons into the Star Sword, Starmon refers to Mikey as "Colonel" then corrects himself to "General". This is a reference to Colonel Tom Parker, the long-time manager of Elvis Presley upon whom Starmon's voice is patterned.
MadLeomon absorbs three Apemon as he digivolves to MadLeomon (Final Mode).