Query: Who is the new evil force that has been enslaving people?
Context: Three years later, with most of the original DigiDestined now in high school at age fourteen, the Digital World was supposedly secure and peaceful. However, a new evil has appeared in the form of the Digimon Emperor (Digimon Kaiser) who as opposed to previous enemies is a human just like the DigiDestined. The Digimon Emperor has been enslaving Digimon with Dark Rings and Control Spires and has somehow made regular Digivolution impossible.