From IMDB:

When his son is sent to the hospital after being hit by strangers, a father tries to find them regardless of the consequences.

From Netflix you can stream this 1 hour 43 minute complete from  Spain. Dialog is in Spanish but  you can choose English subtitles.

From beginning to end this Shakespearean tragedy is a slow-moving downer.  Throughout the film  the constant foreboding suspense centers on what on earth the surgeon father is going to do. next.

As far as film making goes, this is a very well done, frighteningly understated story. Do not expect a happy ending.