Every star ship needs armor and a force field is the ultimate protection against asteroids, space debris and enemy attack. Dr. Michio Kaku reveals how to build a real life deflector shield using components from cutting-edge experiments and theoretical physics. At Boston's Museum of Science Kaku demonstrates the power of lightning while standing in a giant Faraday cage. At Columbia University he fires up a stellarator to show how magnetic fields can control plasma. At MIT he gets a look at some top secret carbon nano material. A multi layered force field to protect space craft from laser and projectile attack is very real possibility.