The Laws of the Universe Part 0

The Laws of the Universe  (Japanese: UFO学園の秘密 Hepburn: UFO Gakuen no Himitsu) is a Japanese animated film series consisting of four films, produced by HS Pictures Studio. The first film in the series, titled The Laws of the Universe: Part 0, was released on October 10, 2015. The anime has been licensed by Eleven Arts.

Background
A group of five junior high school students are wrapped up in a strange occurrence, involving an alien species called Grey.