Yeah I think the basic summary of this story is that you take in a creature, take care of it, and observe it. As time carries on and it slowly changes forms you realize that this thing isn't just intelligent, it may be more intelligent than you are and your existence next to it is no more than just a passing fancy to it. Also the fact that it is far more powerful than you are, and it truly has more control of you than you do it. After this realization you basically have to choose whether to give in and go along with it for your own saftey, or try to resist to keep your life your own.