Identifying Theme in Oliver's Adventure

Oliver was a young boy who loved adventure. One sunny afternoon, he decided to explore the woods behind his house. As he wandered deeper into the trees, he discovered a beautiful, hidden pond filled with colorful fish and surrounded by wildflowers. Oliver felt a sense of joy and wonder at the beauty of the place. He spent the entire day there, playing and observing the fish swim. When the sun began to set, he headed home, feeling grateful for the day's adventure and excited to return to the pond another time.