Summer in Lipowo is gorgeous. Detective Daniel Podgorski feels he is living his best life thanks to his beautiful love Weronika. Meanwhile, two girls are murdered. The police fear it could be the work of a serial killer. Daniel joins the team investigating the crime, led by the polemic commissioner Klementyna Kopp. The lack of breakthroughs coincides with some personal problems in Daniel's life and shocking secrets about Klementyna's past.