Lila was 16 years old in the morning, as usual, accidentally sleepy, but today is a little different, no one knocked on her door to urge her to get up quickly. When she finally woke up, she couldn't find her parents everywhere. Lila went out and found that not only the neighbors, the whole town, the community and even the whole city, could not find half a living figure, all the people disappeared. Faced with an apocalyptic scene, Lila was caught in the panic that she was the only survivor of a disaster. However, while she stumbled, she finally met four other teenagers. Five teenage girls tried to survive in a silent world, but what on earth took away the others? What is lurking in the dark, watching them with interest?