Digimon season 1 is all about 7 kids in the digimon world trying to kill virus digimon and the dark master.
Digimon season 2 is about 6 kids who try and fight the digimon master ends up they defeat him and the digimon master ended up in being a digidestion. then they try and destroy arukenimon
zOn digimon season 3 their are not digidestions but digi tamers its about 3 digi tamers and how they find how to trust their partner digimon and battle strong digimon!