A Sick Grandmother. A Whispered Legend. High on a towering mountain lies the Crystal Cave-said to hold a crystal with powers beyond imagination. For Sophie and her brother Boris, this is no mere myth; it's their only hope. Following a trail of glittering stones, they venture into the darkness where ancient secrets pulse from the damp, echoing walls. But they are not alone. In the depths of the cave, a glowing spider waits, its web shimmering with mystery, guarding something far more dangerous than they could have ever dreamed. They seek a cure, but what they find will change everything. The crystal they discover pulses with a light that transforms more than just their lives-it comes with a price, and time is running out. Their adventure has just begun. What wonders - and dangers - await their return to the Crystal Cave?