PROLOGE:

In a city off the coast of San Francisco an epidemic starts, it spreads through out the whole U.S at an unbeleivable speed. In order to stop this epidemic from enlarging, a SWAT team is called to protect all around the perimeter of the country to make sure nothing comes in and nothing goes out...

The SWAT team leader is named James Hudson, his team of six others are assigned to this mission, but while doing so they have to save survivors, and protect their selfs by any means necessery.