Staff Sgt. Michael Nantz (Aaron Eckhart – The Dark Knight) has just had his retirement confirmed from his superior officers. That same day, Los Angeles becomes an open battleground as alien invaders attack our planet. Nantz reluctantly accepts a second call of duty in order to help a small platoon fight their way across LA to rescue a group of civilians trapped in the crossfire. With time ticking down on a bomb drop that will level most of downtown LA, Nantz and his platoon must race against time to extract the civilians before it’s too late.