Rumble in the Jungle Zone!.Nene Amano and Axeknightmon pursue Stingmon as he is brought into the sacred temple by the Jungle Zone's protector named Deckerdramon to be healed. Outside the sacred temple, Mikey Kudo is bent on saving Nene. Lilamon mentions the Dance of True Heart ritual, which will convince Deckerdramon to open the gateway. As Angie Hinomoto and Jeremy Tsurgi are forced to perform the embarrassing dance in front of everyone, Mikey manages to convince Christopher Aonuma and Sparrowmon to help them. Once the gateway is opened, the main Fusion Fighter members and Christopher enter the sacred temple with Sparrowmon and the Monitamon following them. Beelzemon and some of the others stay behind to fight Kongoumon and his GranKuwagamon army. Finding Axeknightmon as he and Nene attempt to enlist the aid of Deckerdramon to gain the Jungle Zone's Code Crown, Shoutmon × 4 and MetalGreymon fight Axeknightmon as he has Nene split him into Skullknightmon and Axemon to overwhelm his opponents with teamwork and alternate DigiFusions. Mikey tries to reason with Nene when she gives the order to reform Axeknightmon. Mikey learns that Nene is helping Axeknightmon because only he knows the whereabouts of her younger brother. Hearing Christopher telling Nene that she needs to be strong, Deckerdramon deems the youth to have the most heart of the present company. Deckerdramon decides to team up with Christopher at that time and gives him the Code Crown. Following an attack by MetalGreymon and Deckerdramon, Nene withdraws to the Dust Zone with Christopher pursuing her. After returning to help Beelzemon take out Kongoumon, Mikey resolves to help Nene. However, the moment the Fusion Fighters leave for the Dust Zone, a dark energy entangles Mikey as he ends up being separated from his teammates.