Arriving in the Lake Zone, Mikey and his friends find a group of frozen Digimon before hearing a voice calling out. Noting it to be similar to Shoutmon, Mikey learns that the Zone's warrior Knightmon has been defeated on the verge of drowning in the nearly frozen lake. Diving in to load Knightmon into his Fusion Loader, Mikey is saved by ChibiTortomon as he and the other Fusion Fighters aid the Lake Zone army in driving of the Bagra Army platoon under Lalyamon's subordinate IceDevimon. Moments later at the castle, the Fusion Fighters are introduced to the Lake Zone's princess Beastmon with Knightmon telling her they have found their champion. However, Beastmon reveals she found another candidate in Christopher. While a banquet is served, Mikey and Christopher get into a conversation which is interrupted by Jeremy, Ballistamon, as well as Knightmon. Though the three state their distrust in Christopher after he leaves, Mikey thinks the youth is hiding something and wants to help. When the Bagra Army resume their attack, with Shoutmon and half of the Fusion Fighters unable to get up from overeating, Christopher DigiFuses Greymon and MailBirdramon into MetalGreymon to annihilate most of the army. Mikey then realizes that the fight is a distraction as IceDevimon and the Icemon sneaked into the castle to capture Beastmon. Luckily, Shoutmon gets his second wind to hinder the abduction with Mikey and the others meeting up with him. In retaliation, IceDevimon absorbs the Icemon to become IceDevimon Enhancement Absorbent and freezes Ballistamon while Metal Greymon holds off the Bagra Army's assassin Reapmon. After Shoutmon uses the Drill Cannon to save him from IceDevimon, Knightmon and his PawnChessmon drive off IceDevimon. With Christopher taking his leave, admitting not to comfortable with her cuddling, Beastmon names Mikey her champion before he collapses from exhaustion. Meanwhile, Laylamon is at a gate that opens to reveal a gigantic Digimon.