Haven't seen the film and won't be able to. Read about on a movie spoiler page which talks about it dealing with child abuse but never specifies.
Can anyone tell me what was so terrible that happened?
I like him, he says okie dokie. - Dean Winchester, Supernatural
*** Plenty of spoilers ***
Since she is pregnant, the main character is having strange nightmares about her and her father.
She decides to go to the States, where her brother is living. Through her sister-in-law, she understands that there is a secret running in the family. She confronts her brother and she discovered that their father was abusing the brother and it happened he also abused her a few times, but she forgot about it.
The movie describes the different way each of the victims deal with the abuse, including the mother who knew about the "illness" of the father but never really stopped him.
Why aren't you going to be able to watch this movie? are you too young to watch it or sth like that?
If you are already an adult I don't see why you can't watch this movie. Rent it and you'll find the secret by yourself.
good luck