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.