The Room is a 2019 English-language thriller film co-written and directed by Christian Volckman and starring Olga Kurylenko, Kevin Janssens, Joshua Wilson, John Flanders, and Francis Chapman.
At the hospital, Matt speaks with the "John Doe," who warns that he and his wife should leave the house and forget the Room.
Kate tells Matt she is taking the baby out for some fresh air; he tries to dissuade her but ultimately does not stop her.
Once the baby is outdoors, he ages to a young child in seconds; Kate screams for Matt, who runs outside and brings Shane back inside the house.
Shane grows impatient and bored since Kate will not allow him to leave the house, telling him that he is sick and that there are germs outside.
"John Doe" calls the home and reveals to Matt that he was a child wish granted by the Room and he is alive because his parents died, which allowed him to become part of the real world.
The next morning, they discover that Shane has gone outside and aged himself into a teenager, though he still has the mind of a child and is angry with Kate for lying to him about the germs.