Maelstrom

This is the future, a renovation of things of this time, and war, intergalactic war. In one dimension of a future timeline, a group of special ops go to view the showcase of the Maelstrom, some sort of device that no one has any information about, but what if everything went wrong? What if they had to eventually defend the planet? Aliens have gone through dimensions and are threatening to destroy this weak one which will alter the course of Earth.......forever