Elevation

An unknown creature came to the earth and killed humans. To survive humans have to live above a certain height. People became hostages. They've no other choice. But in every oppression there must a fight broken. Here the hero took charge to save his dying son. Accompanied by two ladies. Makers won in creating tension throughout the film. But still the writing could've been better. Lack of detailing and emotional connection. There are a lot of questions that need to be cleared before ending. Otherwise a good watchable sci-fi post-apocalyptic thriller. Recommended.