Campus, starry sky, fantasy, pure emotion, a girl named "Little Satan" has a different kind of unrequited love mood. The girl nicknamed "Little Satan" has the appearance and character of a tomboy. She has a deep affection for Martha, a neighbor girl, since she was a child. Martha has a strange life experience. On a night when the stars were singing, she came to the door of her foster mother. Martha, who is beautiful, intelligent and considerate, is not only loved and attached by Little Satan, but also loved by her adoptive mother and brother Guo. Unfortunately, Martha suddenly disappeared on a meteor shower night and never heard from again. Just a year after Martha left, a freshman suddenly transferred to Little Satan's class. She calls herself a "Martian girl". Mars girls are very similar to Martha in many places. Is it unusual or coincidence? This caught the attention of Little Satan and Guo. "Mars Girl" finally left everyone, leaving only the infinite nostalgia and melancholy of the students ... Many years later, Little Satan and Guo Du graduated from the university, and Guo became an astronaut. On 20 10, China astronaut Guo landed on Mars. In the strange world of Mars, he saw incredible scenes. ...