As the world teeters on the brink of destruction from an extraterrestrial assault, Han Oreum must navigate her military duties while single-handedly caring for her daughter, Goo Cho-rok. During a civilian rescue mission, she comes face-to-face with an eerie being that ultimately claims the lives of her loved ones. Though she valiantly battles the monster, her return to safety reveals the brutal truth of the tragedy that has befallen her family.