"It's summertime and a boy and his dog are leaving behind their apartment in the busy city. His grandparents' home in the countryside feels like a different world. From the window, the curious boy sees a path leading enticingly into the forest. He can't wait to explore. At each bend in the trail the boy discovers more wonders of the surrounding natural world, from towering trees to a still, silent lake. He can't resist diving down, down into the cool...