This fast-paced criminal series presents a unique blend of criminal and psychological plots. The main character is young policewoman Ada who starts her dream job at the Polish Police Headquarters. She joins the team led by experienced officer Maciej Wolski. He is not enthusiastic about her presence and treats her as if she was an intruder. They seem to belong to totally different worlds but their job is to solve criminal cases such as mysterious murders, kidnappings, and frauds so they need to find common ground and cooperate. The viewers of the series have the opportunity to follow not only thrilling criminal cases but also a fascinating transformation of the main characters.