This game is a sequel to X and X-scape
Monolith soft is reviving that old Nintendo series about flying tanks on alien planets. It is not in first person view anymore because Japanese players rarely take to that kind of thing, ironically.The plot twist is that it IS a Xenoblade sequel, albiet a distant one.
And the twist is revealed in a postgame mission where you team up with Riki to take down one of the game's Bonus Bosses.