The 5th Wave

A young woman named Cassie Sullivan fights for survival in a post-apocalyptic world invaded by aliens that have decimated the human population and left only three waves of destruction in their wake. With her brother's life hanging in the balance, she embarks on a perilous journey to rescue him amidst a sinister plot where children are being brainwashed into killing each other as part of an alien invasion force known as "the Others."