Triple Trouble is another one of the adventures of Julka and Olek. When Monet’s Beach in Pourville disappears from the National Museum in Poznań – the children face a task to find the painting, discover the thief’s identity, and save an innocent painter accused of the robbery. A harmonious duo begins an investigation, but suddenly a crazy twelve-year-old Felka appears on the horizon, and trouble comes with her. The story of jealousy and trust is intertwined with solving a criminal mystery. Triple Trouble shows that you can not believe in a friend unless you first believe in yourself and that friendship put to the test may become even stronger.