Maddy and Quinn, two friends, discover a mysterious portal in a cave in the woods that was not there before. They reluctantly enter the portal and they end up in the Ozark Mountains, where they meet a dwarf like man named Merle, a cave explorer. Together the three, explore the cave, learning about its unique species and mineral formations. Their adventure takes a dramatic turn when they hear a strange noise and get lost. The story combines elements of friendship, curiosity, and courage, with educational insights about caves and natural formations.