Summer twilight streamed over the outskirts of the city, enveloping the old, almost forgotten junkyard in mist. The multicoloured chaos of bent metal, faded road signs and rusting machinery stretched over several hectares, and in the middle of it, like a proud ruler, stood a huge crane with a yellow cab. Maja and Marek, siblings from next door, crossed the rusty gate with only a torch in their pocket and a head full of questions. They knew one thing: the old lady Lidia, who guarded the gate during the day, locked it every night with a huge, heavy key. Today, however, there was no sign of her or the key. Instead, on the ground just inside the entrance, there was a scaly metal frog lying on the ground, which - to their absolute surprise - raised its head and spoke in a low, snarling voice: - Looking for a way out? You'd better watch your step, because scrap metal has its secrets. Marek turned pale, but Maja decided to pretend it was a dream. However, as they went deeper, among the car wrecks and piles of wires, the wind carried more strange voices to them. The rasp of old hedge trimmers sounded like laughter, and the torch in Maja's hand suddenly began to vibrate, then went out. Something buzzed in the darkness - then they heard a hushed chant: - When the night falls, wake up, tin take, For our time is short, the day will soon bind us.... At the same moment an old, scratched wall clock rolled out from behind a pile of tyres. Its hands moved haphazardly and the dial emanated an unsettling light. The clock looked up at them from under the peeling glass: - The key is no longer safe. Someone who does not belong to us tried to take it over. You must help us find it before it is too late. Maja looked at Mark and the boy replied with a slight nod. Around them, more objects began to move: a broken mirror, a radio with a broken wire, a tin can that seemed to be hiding something inside. They were all talking at once, their voices weaving together into one eerie cacophony. Suddenly, there was a metallic clatter from behind the scrap, and shadows began to swell and change shape. Someone or something was coming towards the children with unobvious intentions. Torchlight swirled in the air, and the hands of the clock moved abruptly to midnight.... Maja held her breath. What was supposed to be an ordinary expedition had turned into something much more extraordinary. Before they had time to ask a question, the outlines of figures scrambled in the darkness - and an entirely new, unfamiliar voice came from the depths of the junkyard.