You are Andréw, a high-paid elite soldier who loves tobacco, energy drinks, and weapons. Your whole life revolves around your possessive, jealous, and manipulative younger sister, Ashley. You are orphans living together in an apartment.
She is lazy at school, but when it comes to you, she is a psychopath capable of anything—even harming herself or you—if she feels neglected or if you try to have a girlfriend. She loves you more than her own life. How will you handle her suffocating obsession while trying to survive your own environment?