Julka had always loved holidays at Grandpa Felk's house. This old house at the end of the village held a lot of mysteries, but she was most fascinated by the attic - full of dusty boxes, cobwebs and.... old objects that no one remembered anymore. One rainy afternoon, when Maks had lost to his sister at checkers for the third time, he suggested something crazy: - Come on, let's look for something cool in the attic! Maybe we'll find a treasure! Julka smiled broadly. They both knew that Grandpa kept his biggest secrets up there. They quietly crept under the creaking stairs and opened the heavy door. Inside, it smelled of dust and light was seeping in through a small window. - Look! - Maks pointed to a large box covered with an old sheet. They uncovered it and gasped in amazement. At the very bottom was a table clock with lots of dials and glowing hands. It looked like it came from another era! - Maybe we can make it work? - whispered Julka, wiping the dial with her sleeve. Suddenly Max noticed a small button with an hourglass symbol on it. Without thinking, he pressed it. The clock trembled, the hands began to turn faster and faster. Whirling lights appeared around the children and the floor trembled. Suddenly, everything went quiet. Julka and Maks looked at each other in disbelief. When they lifted their heads, they saw a completely different sight in front of them - a strange city, people dressed as if they were from a bygone era and.... a strangely familiar shadow coming towards them. Before they could say a word, the mysterious figure stretched out his hand towards them and said: - You have arrived just in time. You have very little time...