From the preview, "The thing is, slacking off has consequences. When Neptune and Nepgear arrive in Hyperdimension Neptunia Victory‘s first dungeon, Neptune comes to a shocking realization. She’s only at level one! She swears she was at level 999 last game, then rallies against Nepgear, who’s at level 10. Nepgear may have been slacking too, but she also took some quests on the side."