Leo lived in a busy city filled with tall buildings and noisy cars. He often wished he could see more green trees and colorful flowers. One Saturday morning, while Leo was riding his bicycle down a small alley, he noticed an old wooden door covered in ivy. It looked slightly open.

Curious, Leo stopped his bike and peeked inside. To his surprise, he saw a beautiful garden hidden behind the walls. It was quiet and peaceful. There were red roses, yellow sunflowers, and a big apple tree in the center. A small fountain was splashing water gently. It felt like a different world compared to the noisy street outside.

Suddenly, an old woman appeared from behind a bush. She smiled kindly at Leo. "Welcome to my secret garden," she said. Her name was Mrs. Green. She told Leo that she had taken care of this garden for thirty years. She loved watching the plants grow and listening to the birds sing.

Leo asked if he could help her. Mrs. Green was delighted. They spent the afternoon watering the plants and pulling out weeds. Leo learned the names of many flowers. Before he left, Mrs. Green gave him a bag of seeds. "Plant these on your balcony," she said. "You can make your own small garden." Leo rode home happily, excited to bring a little bit of nature to his city home.