On the roof of the old observatory, hidden among the dense pines, Kasia, Michal and Ola were just setting up the telescope. It was the middle of July - the darkest night of the year, perfect for space adventures. Every summer, the three friends met here to dream about the stars, but on this night something very special was about to happen. As Michael was turning the dial of the telescope, suddenly a strange, snoring signal came from the radio that the old professor had left on the table. Instead of familiar songs or news, they heard a sequence of melodious sounds they did not recognise. Ola looked surprised at Kasia: - Is that... the cosmic alphabet? Kasia, always curious about puzzles, pulled a notepad out of her pocket and began to write down the sounds: pip-pip, piip, poof, pii-puu. Michael quickly turned his telescope towards the biggest pinkish spot in the sky - the constellation of the Fox. After a moment, a quiet voice came from the radio: "Poof... Poof... help...". The children looked after each other with bated breath. - I think it's a cry for help! - whispered Ola. The next day, after hours of poring over sky maps and trying to decipher the signal, the friends concluded one thing: they had to try to answer. And then, completely unexpectedly, a luminous point appeared in the sky, which began to grow... and grow until it turned into a tiny, shiny ship shaped like a yellow doughnut with shiny frosted stripes. The door of the ship slowly opened and a strange, friendly laughter came from inside. - Are we going in? - Michael asked with wide eyes. The friends looked into each other's eyes. Would they dare to go on board and find out who had sent the signal from the planet Pufon? And what secrets does this extraordinary cosmos hold?