Build a movie plot around this: What does Kozma gives Casey? I don't know who Kozma is
The movie starts off with Casey Beldon (Odette Yustman) jogging during the wintertime in a park. Stopping to take a breath on the running trail, Casey sees a glove on the ground. She picks it up and turns around, seeing a pale little boy with a missing glove. She stares again and the boy becomes a dog with a strange white mask on. The dog goes into the woods and Casey follows it. The dog is nowhere to be found but she does see the mask on the ground. When she tries to pick it up she finds that she has to dig into the ground to get the mask out and in the ground under the mask she sees a clear container containing a still developing baby in it, which opens its eyes.It turns out to just be a dream and we see Casey lounging on a couch talking to her best friend Romy (Meagan Good). Casey wants to know what her dream means, so Romy consults a dream book. Romy says that in a dream a baby is symbolic of change and renewal and if it is a stranger to the dreamer then it is something in the dreamer not yet ready to be born, while the dog in mythology is often portrayed as the messenger of the dead. Romy then asks about the kids, and Casey says they're asleep (Casey is babysitting). However, she hears sounds upstairs above her and then through the baby radio, a child whispering, "Look in the mirror, some people are doorways", so Casey tells Romy that she has to call her back, and makes her way upstairs to check on the kids. Casey sees Matty, about four years old and the older of the two children, standing in front of the crib holding up a small mirror over his little brother telling him to "Keep looking." Casey comes closer to tell him to stop when Matty strikes at her with the mirror and says, "Jumby wants to be born now."The children's parents come home and Casey leaves. Outside the house, Casey finds the same glove from her dream on the sidewalk. When she gets home she says goodnight to her dad and gets ready for bed. After turning out her bathroom lights she hears a knocking coming from her medicine cabinet. She...