Room 24 at Nicolaus Copernicus High School looked standard on a Wednesday morning: benches covered in colourful notes, one cracked teacher's chair and a blackboard on which someone had written "Space calls!" with a marker. Agnes, the official president of Class 2B (because she had the loudest voice during the election), rolled her eyes at the sight of her best friend, Kuba, who, sitting with his back to the teacher, was juggling two tangerines and an apple stub. The rest of the class was trying to catch bits of the conversation, because they all knew that a decision was to be made today: where would 2B go on a class trip this year? At the same time, the class teacher, Mrs Warda, was reviewing a message from the principal in her emails. The subject line: "Trip? Originality welcome!". Mrs Warda literally shuddered at the thought of what "originality" could mean when performed by her pupils. - 'Listen, we need to choose something that will wipe out the competition,' said Kuba, still holding an apple on the top of his head. - Class 2A goes to an escape room. 2C is going on a canoe trip. Let's be serious. Let's do something that will go down in history! - Oh, for example, let's make history because we'll disappear without a trace of your idea? - muttered Julka, a specialist in sarcastic comments. Laughter rang out in the classroom. More and more silly ideas were thrown around: "A trip to the local patisserie and tasting every doughnut", "An expedition to the North Pole in sandals" or "A marathon of watching cooking videos with Grandma Halina". And then Lena, the quietest girl in the class who usually didn't say anything, spoke quietly from the back: - How about... let's fly into space? At first the whole class burst out laughing. But Lena had a very serious look on her face. - 'After all, it's impossible,' replied Agnes, still smiling. - Unless you have an astronaut uncle that nobody knows about? To general surprise, Lena shrugged her shoulders and took out a strange, silvery object from her backpack. It looked a bit like a TV remote control, a bit like a calculator counting in light years, and a bit like something you could buy at the bazaar for five zloty. Lena pressed the button. At the same moment, the light in the classroom flickered, the benches trembled, and outside the window they saw something that could not be described in a single sentence. Bright colours, geometrical shapes and.... a huge, spinning platform that was just coming towards the window of room 24. Everyone literally froze. Mrs Warda, not understanding what was happening, dropped her phone. Cuba held his breath and even the tangerines stopped rolling on the floor. There was a quiet sound, a bit like someone pouring lemonade into a computer, and a transparent door unfolded leading somewhere out there, into an unimaginable space, full of lights and swirling stars. Lena just smiled broadly and said: - Who's first, then? There was a silence in which the heartbeat of the whole class could be heard. Everyone already knew that nothing would be the same from now on. And then the first person took a step towards the luminous exit....