Looks like Nick Morton (Tom Cruise) unwittingly awakened and unleashed an ancient evil Ahmanet (Sofia Boutella) and becomes part of her ultimate evil plan to destroy the world as we know it. 

Though safely entombed in a crypt deep beneath the unforgiving desert, an ancient princess whose destiny was unjustly taken from her is awakened in our current day, bringing with her malevolence grown over millennia, and terrors that defy human comprehension.