The Sawyer family had a happy, exciting life. Alien enthusiasts, the Sawyer clan lived in the city of Roswell, New Mexico, and spent their lives searching for life outside of their own world. One morning, however, they learned along with the rest of the planet just how occupied the Universe really is. For on that fateful day, not one, but two alien forces arrived on the planet, causing destruction and mayhem to the world. However, that is not the only problem. Both alien races want the planet for themselves, and this causes both alien races to go to war. Now Earth is caught in the middle of a war they didn't want, and humanity must fight for survival. How will the Sawyer family get called into the fight for survival? And what will happen... When Worlds Collide