Szymek was just looking at the new poster on the school door. In big green letters it invited to an invention competition. Szymek's eyes sparkled with excitement, because inventing strange things had always been his favourite game. However, something happened that day that surpassed even his imagination. As soon as he entered class 5b, he heard the loud laughter of his friend Mai. He also noticed that Kajtek - their mutual friend - was up to something again. There were three crisps lying on his bench, arranged in a zigzag pattern. Szymek looked at him questioningly. - Quiet! Look! - whispered Kajtek, staring at the crisps. And suddenly, without touching them at all, Kajtek made the first of the crisps jump up, as if moved by an invisible force! - How did you do that! - groaned Maja and covered her mouth as far as it would go. Kajtek opened his eyes wide. - I don't know! I just... I thought about it and it happened! Szymek felt shivers run down his spine. - We have to check it out - he said seriously. - Maybe each of us can do something strange. After lessons they met on the playground behind the school. Szymek had an old spring with him, which he had once intended to use to build a catapult. This time he wanted to see if he could also do something unusual. Maja brought a cup of water - just in case. Kajtek tried to move the pebbles with the necessary force, but he needed tremendous concentration. Maja, still bouncing with excitement, suddenly stretched her hand towards a puddle after yesterday's rain. The water began to float gently in the air, swirling like a little blue ribbon. - Ooo! That's amazing! - shouted Szymek. And Sam, when he closed his eyes and touched the spring, felt a surge of warmth. Suddenly, tiny sparks flashed around his fingers. All three looked at each other with wide-open eyes. Each of them had their own power! They began to experiment. For a moment, the playground looked like a scene from a superhero movie - tiny objects floated in the air, water formed waterfalls and the occasional sparkle flashed around Szymek. Suddenly they heard rustling behind the trees. - Who is there! - asked Maja, clutching her cup tighter. A figure emerged from the bushes. She was wearing a school sweatshirt with the hood pulled deep over her head. In her hand she held a wet piece of paper. She approached them slowly, looking around. - 'I know what you can do,' she said quietly, and there was a foreign, slightly husky note in her voice. - 'But you're not the only ones...