One sunny afternoon, seven-year-old Kacper was playing in the backyard, in a land of imagination where every branch, leaf and pebble could become anything he wanted. Suddenly, he noticed something glittering in the grass. After a moment's hesitation, he walked closer and, to his amazement, saw a small, silvery gate, barely a few centimetres taller than the clover beside it. In appearance, it resembled a small, old metal gate, like those in the old cemetery in the city. One might think it had been left by someone, but Kacper had a different suspicion. "Could it be a ... a portal?" - he asked himself aloud, recalling the fantastic stories his mother used to read to him at bedtime. Kacper approached the portal cautiously. His heart was beating like crazy when he touched the rusty gate with his finger. Suddenly, the whole world swirled. The silvery gate flashed brightly and the courtyard disappeared. Now there was only light around Kacper.... Suddenly a thought came over him: 'Where have I gone? What now?