If people are confused: Stuart is kinda insane. He explored a mysterious cave near the Mars facility, but came out mad. He was still sane, so he didn't need to be replaced. Since the company still needed to explore the mysterious cave, they sent their rover mechanic and youngest staff member, Margie. This time, she didn't come back, so the company stopped sending people. Stuart then started hating Margie for replacing him for something nobody knows about. I also decided to add some side notes about them, like how Stuart goes to therapy and that Margie knows he hates her.