Unknown Person

The young daughter of a journalist disappears into the desert without a trace—eight years later, the broken family is shocked when she is returned to them, as what should be a joyful reunion turns into a living nightmare.

Several friends travel to Sweden to study as anthropologists a summer festival that is held every ninety years in the remote hometown of one of them. What begins as a dream vacation in a place where the sun never sets, gradually turns into a dark nightmare as the mysterious inhabitants invite them to participate in their disturbing festive activities.