In a conservative and religious small town in Northern Finland during the late 1970s, the arrival of the sexual revolution disrupts the balance of two architect families. The plot follows two 13-year-old boys, singers in the traditional Star Boys Christmas procession (Tiernapojat), who closely witness their parents' sexual liberation and the resulting marital tensions. Confronted with the adults' behavior and the breakdown of their family structures, the teenagers face upheavals that impact their own transition into adulthood.