Nanna has invited her daughter Cille and her best friend to celebrate Cille's 18th birthday on a cruise ship bound for the Caribbean. But the first evening of the dream vacation itself turns into a nightmare.

Jan, a nurse who is also a father, was sexually abused by his father as a teenager. Working in Nuuk, Greenland, he tries to connect to the culture with sex. When someone calls him a Kalak, a Greenlandic word with a double meaning of both a "true" and "dirty" Greenlander, he wears the epithet as a badge of honor. But ultimately he has to confront his father.

Bjørn investigates the killing of his daughter. People around him believe she might have committed suicide, but he doesn't accept that. Both the stakes and the suspense rise relentlessly as Bjørn inches closer to the truth.