Short version: Magic is Real.
Longer version: Magical beings are real, functional, and alive. They are hiding from the "normal" society at large for various reasons, ranging from their own set of culture to actual discrimination against us. Yes, some, or many, of those magical beings hate us normal humans just because of who we are. Their desires are anywhere from turning us into pets, slaves, to full-on exterminations.
The full extent of their power is unknown, but expect it to be "highly destructive". It is confirmed that on a purely 1v1 basis, a normal magical can completely wipe the floor with a normal human. Note, that only happens on a good day. On a bad day and when the said magical is highly evil and/or sadistic, well, at least we have a lot of death-row prisoners, expendable personnel, on that day.
We are only informed of this matter recently, and the dire circumstances force us to immediately act on it. A Project is just launched, and you are selected to lead it. Come Hell or High water, you are the first bulwark against any magical threats.
Good luck, Commander. You will need it.