谁在那，夜色沉沉，星星闪烁，心情如潮。闷寡妇影院

　　Everyone knows the feeling of anxiety when a stranger knocks on the door. Is it worth it to open? Who's there? A billionaire, an airplane pilot, a police trainee, a young mother and her daughter find themselves in the face of the unknown, they have to look beyond, and most importantly, inside themselves to understand what they are really afraid of.