Famitsu's revealed that the 3 scenarios the latest Dragonball game will cover the Saiyan saga when they first arrive on earth to create havoc, along with the Freeza saga when the evil alien prince tries to obtain immortality with the help of the Dragonballs and the Cell saga.

Source:
• Famitsu

Related Links:
• Dragonball Z: Haruka naru Gokuu Densetsu, Energy Cards Revealed
• Dragonball Z: Haruka naru Gokuu Densetsu, A Four Character Story