Damn now I want to get this game. How many Arcs does the single player cover?
Quote:
Prologue
Saiyan Saga
Return of the Saiyans Saga
Ginyu Force Saga
Frieza Saga
Cell Saga
Android Saga
Majin Buu Saga
God of Destruction Beerus Saga
Saga of the Demon God Démigra
Saga of Super Saiyan legend
Are the different chapters of the game.
Keep in mind that it's an original (time travel) story, so they're not full-length versions of the original arcs or anything. Cell "Saga" is just a part of the Cell Games, etc. Also the Android Saga is in Future Trunks's timeline, not the same Android Saga from the manga/anime.
There are also over 50 Parallel Quests to do too, which are basically what-if missions that wouldn't fit in the story mode, like teaming up with Vegeta to beat Goku during the Saiyan saga. These can also be done in online co-op too.