A woman is chosen to participate in an experiment, but something goes wrong and she becomes violent and out of control. She escapes from the lab but realizes that something has changed inside her - she can no longer control her urges or stop herself from doing terrible

The story is about a woman who is walking on the beach at night when she sees a giant white horse. She follows it and finds herself in a dark and eerie laboratory where she meets an old woman who tells her that she has been chosen to be the subject of an experiment. The woman agrees to participate, but as the experiment progresses, she begins to feel strange and out of control. She realizes that something is not right when she starts seeing things that aren't there and hearing voices in her head. As the experiment continues, the woman becomes more and more violent, causing chaos in the laboratory. Eventually, she escapes from the lab but realizes that something has changed inside her - she can no longer control her urges or stop herself from doing terrible things.