Sixteen children and four adults are killed in a devastating boat crash in Copenhagen. Detective Chief Superintendent Konrad Simonsen is called in, only to discover that this was no accident and that one of the passengers has a very personal connection to the homicide team. Reeling from this revelation, Simonsen follows a trail that eventually leads him to Bosnia and a legacy of criminal misconduct. All evidence points towards one shady figure: a high-ranking army specialist with a suspicious past.