The first four waves of an alien attack have left Earth without electricity, ravaged by earthquakes and disease, and infiltrated by extraterrestrial invaders who can blend in among us. Now, a teenaged girl (Chloë Grace Moretz) must rescue her younger brother when he's taken to be trained as a soldier in a child army. But what is this new fighting force's connection to the imminent fifth wave? Thrilling adaptation of Rick Yancey's young adult novel also stars Nick Robinson, Liev Schreiber. 112 min.