Complex sentence: It is based on the 2007 novel "Submarino" by Jonas T. Bengtsson, and focuses on two bothers on the bottom of Danish society, with lives marked by violence and drug addiction.
Split into simpler sentences: It is based on the 2007 novel "Submarino" by Jonas T. Bengtsson. The narrative focuses on two bothers on the bottom of Danish society, with lives marked by violence and drug addiction.