Your favourite gamer trio is back! This time, Waldek, Staszek and Delfina will spend an adventure-packed summer in the Tatra Mountains. During the trip, Waldek accidentally finds out that his father – the man he has heard so much about from his mum, the person who abandoned his family a long time ago – lives nearby. The boy is determined to find him and ask him about the reasons for his decision. Together with Staszek, under the cover of night, they set out on their mission. The hazards of the mountain trail, however, are nothing compared to what Delfina will have to do. The creative teenager has to hide the truth about the boys’ disappearance from her aunt, the mother of Waldek and… her new partner. How will this secret mission affect the lives of all the characters? Will Waldek find an answer to the questions that haunt him and understand the actions of his father?