Build a movie plot around this: Which room does Birdie enter? Lena's room
A:
This article's plot summary may be too long or excessively detailed. Please help improve it by removing unnecessary details and making it more concise. (March 2012) (Learn how and when to remove this template message)The film begins at Heathrow Airport, where a Polish immigrant named Lena (Olga Fedori) is working a shift as a cleaner. While there, her colleague Birdie (Ainsley Howard) helps her to clean the toilets. The two begin to talk and Lena reveals that she lives alone and doesn't keep in touch with her family. Birdie introduces Lena to her adopted brother Elbie (Toby Alexander), who also works at the airport and is a mute. Lena tells Birdie that she doesn't get on with her family. While talking Lena notices scars on Birdie's arm, Birdie explains that she used to have behavioral problems; but that she's better now. At the end of the shift Lena misses her bus so Birdie tells her that her dad will drive Lena home if they walk to Birdie's house.Upon arriving at the house Lena is knocked out from behind and injected with a syringe. She wakes up tied to a chair to the sound of screaming coming from another room. Moments later Mum (Dido Miles) and Dad (Perry Benson) enter the room and introduce themselves. Mum tells Lena that if she does what she is told everything will be ok. Lena is unable to respond because of the injection she received earlier and Mum proceeds to inject her with a sedative. When she wakes up again Mum begins carving marks into her back. Lena is unable to speak, and Mum tells her to not try to talk. (Because she has had a little jab.) She gives Lena another injection, and Lena falls asleep. She wakes up later, tied to a frame. Mum tells her that she wanted another girl to come and live there. Mum then pierces Lena's skin with some metal and carves some marks into her back. Following this incident Lena is taken to see Dad who tells her that in his house she will follow his rulesAt breakfast, the family are watching pornography. Lena makes an escape attempt but Dad grabs her and Elbie...