Seems like they're preparing a new part of Time Temple.

Jesus, so agressive. Sorry if I did something wrong.

I say it because it makes more sense. There is no prove indicating that Mercedes and Evan have met, or will met anytime soon. Freed was close to her, and would make sense if those 2 were the first to confront the black mage. The promo video could be showing their close relationship. Besides, if I remember right they speak in the full version. Maybe we could clear all of this is someone could translate what they say to each other.

I'm not being aggressive, I just want something more reliable than opinion to base conclusions off of. I have provided a wealth of information to prove my point, and I would appreciate it if you would base yours off of something more than a feelings and could-bes.