In order to prove his fatherhood potential to his pregnant girlfriend, Frank 'kidnaps' her 12-year-old nephew and tags along on his best friend Casper's debauched weekend canoe trip.
Police inspector Carl Mørck is put in charge of a department of cold cases, joined only by his assistant, Assad. They dig into a case about a disappeared woman.
The murder of young twins initially implicates a group of upper class students as the killers, though the case takes a turn or two from its starting point.
Frank and Casper's friendship is put to a test, when Casper decides to leave Denmark to pursue a solo career in Los Angeles. Determined to win his best friend back Frank chooses to follow Casper ensuring an eventful trip.
Frank turns 50 and his good friend, Casper, invites him to Iceland on a boy's trip. However, the trip does not go quite as planned.