An Oslo detective with a painful past returns to his native Iceland to help a dedicated cop hunt a serial killer with a link to a mysterious photo.
Sub Rosa observes the 8 year old Tilda, she lives with her grandmother who runs a flower shop. The young girl roams around freely and discovers a world of indecent activities lurking behind the flower store walls.
Katrín wakes up in the hospital after a serious car accident to find that she has received a life-saving blood transfusion. However, the religious cult she belongs to forbids such things. As Katrín struggles to reconcile this conflict with her church and family, she begins to become obsessed with the stranger whose blood is now flowing through her veins.
