Kacper liked to fall asleep by the small bedside lamp. His cat Luna always snuggled into his legs. One evening, when his mother said: "Good night!", Kacper felt that Luna was restless. She purred quietly and peeked under the bed. Suddenly, a shadow flashed in the corner of the room. Was it the movement of a curtain? Or maybe... something moving under the bed? Kacper bravely leaned over and looked into the darkness under the bed. There he saw something that flashed like two small lights. What could it be? Luna started meowing quietly and pulling her paw under the bed. Kacper felt a chill run down his spine. Should he look deeper or was it better to call his mum? What was hiding in the shadows under the bed? That's what Kacper didn't know yet....