The day Emilia, Kuba and Zosia moved into the villa on Kwiatowa Street together, they will never forget. The house stood off to the side, surrounded by a wild garden, and the trees whispered in the crowns when it rained. There was something fascinating about the cracked staircase and the windows through which an unsettling shadow fell. They sat by the fireplace - an old cast-iron one, giving the room an atmosphere straight out of a detective novel - and unpacked cardboard boxes of glass, books and countless mugs. Emilia found the floor creaking underfoot, Kuba locked himself in his room with his guitar, and Zosia tried to deal with the cobwebs in the kitchen. The first night they were surprised by the rain. It drummed on the roof and the wind whistled among the gutters. Unable to sleep, Emilia noticed that there was a door at the end of the corridor, right next to the stairs leading to the attic, which they hadn't mentioned before. The door was old, white, with a red handle. There was thick dust around the frame. This was strange because the rest of the house, although neglected, was not so dirty. In the morning, over breakfast, Emilia told about the find. Zosia, always adventurous, immediately grabbed the key hanging on a chain in the kitchen. Cuba initially shrugged his shoulders, but curiosity took over. When they stood in front of the door, they felt a strange shudder. The key fitted perfectly, but the lock didn't budge. A quiet rustling sound came from inside, as if someone was whispering in there. The feeling of tension grew with every second. Suddenly, amidst the silence, the door shook slightly and a thin trickle of light leaked out from underneath. Zosia looked at her friends with wide-open eyes: - Do you hear that? The door began to open slowly....