Warning! This Post Contains Spoilers For 3 Body Problem Season 1 Netflix’s ambitious science fiction series 3 Body Problem brings author Liu Cixin’s heady ideas to the small screen in season 1, and now it will return for season 2. Based on Cixin’s Remembrance of Earth’s Past book series, 3 Body Problem tells the story of human scientists who must grapple with an imminent alien invasion that will take place 400 years in the future. Though alien invasion stories are as old as sci-fi itself, 3 Body Problem is a decidedly philosophical story that stretches the boundaries of the tech-centered genre.