On a sun dappled summer day a science expedition propels two children toward an enigmatic encounter at the edge of their known world. On a sun dappled summer day a science expedition propels two children toward an enigmatic encounter at the edge of their known world. On a sun dappled summer day a science expedition propels two children toward an enigmatic encounter at the edge of their known world. On a sun dappled summer day a science expedition propels two children toward an enigmatic encounter at the edge of their known world.