Demon with the Atomic Brain

A failed attempt to weaponize a machine capable of opening portals to other worlds creates an exponentially expanding bubble of fractured space-time which threatens to engulf the entire universe! An elite team of specialists must enter a "crack" in the disturbance and make their way down a rabbit hole of increasingly more dangerous alternate realities to find and shut down the machine which created it! Will their last ditch attempt to save humanity be successful? Will this be how the universe ends?