Dark Side of the Sun.Mikey Kudo, Christopher Aonuma, and Nene Amano arrive to the last kingdom in the Digital World known as Bright Land. The Fusion Fighters start heading towards Bright Land’s tower. Sparrowmon informs the Fusion Fighters that a barrier has prevented her from reaching the top of the tower while finding Bright Land's Digimon that was pinned down to the ground by big spikes. One of the resident Digimon reveals that only the last Dark General named Apollomon can remove them. Apollomon's two captains named Marusumon and Sethmon appear with their army. The army of Marusumon and Sethmon commences a battle against the Fusion Fighters that ends in Sethmon's defeat. Seeing the Fusion Fighters' strength first hand, Apollomon grants them an audience with him on Bright Land tower's garden. Apollomon reveals he had only acted to protect his subjects. Apollomon asks the Fusion Fighters to help him stop Bagramon from executing D5 within a few days’ time. Mikey believes the Fusion Fighters can trust Apollomon. Christopher and Nene only go along after seeing Apollomon risking his own life to protect Mikey during a battle the two instigated. Ewan Amano and Tuwarmon appear in front of the Fusion Fighters. Ewan reveals that Bagramon and Axeknightmon infected Apollomon with an evil virus program named Whispered that has activated. Apollomon Whispered killed Marusumon. Apollomon Whispered gives Ewan and Tuwarmon access to Bright Land’s tower. Apollomon pleads the Fusion Fighters to destroy him before he is quickly subdued by Apollomon Whispered. Mikey finds himself devoid of the conviction to use his Fusion Loader to perform Great Fusion. The Fusion Fighters are sent into the Digital Underworld.