Tosia sat on the wooden porch of her grandparent's house and watched the morning mist drift lazily between the tall pines. It was summer holidays, and she and her brother Bartek had come to the countryside, away from the noise of the city. That morning, however, something was different - her grandfather, usually cheerful and talkative, was keeping quiet and glancing suspiciously at the woods. - Bartek, look! - cried Tosia when, while playing in the garden, she came across an old metal compass. Instead of pointing north, its pointer was persistently pointing into the thicket of the Valley of the Misty Pines. Bartek came running over curious. - Where did you get this compass? - I don't know. It was under an old bench... Maybe it's a clue? A moment later, the siblings hear their grandfather talking on the phone in a voice full of anxiety: - Yes, it has appeared again... He points to a path deep into the forest.... Tosia and Bartek exchanged communicative glances. They knew they had to find out what Grandpa was hiding. Without hesitation, they set off after the magic compass. As they entered the thickening mist, a quiet whisper came from behind the trees: - Not everyone returns from this path.... Suddenly an old map, inscribed with strange symbols, appeared in their path. At that moment, the compass began to spin violently. Tosia held Bartek's hand and together they took the first step towards the unknown....