SkullGreymon's energy was drained. He became Agumon, so Ken decided to continue experimenting on him. The Black Digivice made him Digivolve again to SkullGreymon. His power got redrained as he proved to be too strong for the Dark Ring, so Ken decided to create a new kind of ring, with a bigger mass, the Dark Spiral. Wormmon freed Agumon, but the DigiDestined where delayed at leaving due to Davis wanting to fight. This allowed Ken to catch up and trick the kids into fighting. While they were fighting, Agumon decided to attack Ken, and Ken used the opportunity to slip his Dark Spiral onto Agumon. Then, the Emperor made him Digivolve to ShadowMetalGreymon using his new Dark Spiral. ShadowMetalGreymon defeated the Armor Digimon and then went with Ken to conquer the Digital World. Matt arrived and punched Tai to knock some sense back into him. Tai then got everyone to commit to defeating Agumon, and they jumped into the train carts to pursue Ken and ShadowMetalGreymon.