An underwater cave glowing with soft blue and green light, filled with ancient carvings and magical symbols on the walls. Lucy swims through the water, her golden ponytail flowing behind her, her curious blue eyes shining with courage. In her small hands, she clutches a shimmering crystal shard she found in the depths, her clothes slightly damp but her expression determined. Lucy an 8-year-old girl with golden hair tied in a ponytail, bright blue eyes full of determination, wearing a white shirt, green overalls, and brown boots.