In Thou Shalt Not Kill, Catholic high school students are faced with a decision: do I kill to save my life and the lives of others or not, even at the cost of my own life? Casey Nichols and her friends are forced to answer this question after finding themselves in the middle of WWIII when their school, their city, and their country are overrun by terrorists. The decisions they make have consequences, but can they live with the choices they make? Derek saves Casey's life, but will another steal her heart? In Thou Shalt Not Kill, some will live, some will die ... all choose to fight. When all hell breaks loose, which path will you choose?