The Secrets Beneath the Earth. During a violent earthquake in an old mine, Laurin and Dietrich are separated from the rest of their group and become trapped in a tunnel; rubble and debris make the way back impossible within seconds. In their search for an exit, the teenagers delve deeper into the mountain's depths. Soon, they discover strangely glowing stones, an underground lake, and deep within the mountain, a city where dwarves are held as slaves. Rescue is nowhere in sight. However, ever since Laurin touched the glowing stones, a strange transformation has begun to take place within her. She develops unexpected powers and abilities, awakens petrified and dried-out plants, and brings life and color to the underground world. It soon becomes clear: the adventurous journey through this fairy-tale, threatening world leads to the secret of her own origins.