Before I Leave Beta

It's the year 2079, Nadia, a woman about to turn 18, has never left her house, doesn't know the outside world and all because her mother overprotects her. She keeps her as if she were a prisoner in her own house under the pretext that the end of the world is near due to the latest cataclysms that have occurred and have devastated various cities around the world. Her father, who died two years ago, gave Nadia a robot called Otto, programmed for the sole purpose of protecting her and taking care of her for the rest of her life. Everything changes when Nadia finds a mysterious letter from her father in which she warns her that she must escape from there with Otto before she turns 18 or else she will die. Does her mother have something to do with it? Will Nadia be able to escape and survive abroad?