Once upon a time, there was a little frog named Grumpy. Grumpy Frog lived in a cozy pond surrounded by tall reeds and colorful flowers. But no matter how beautiful the day was, Grumpy Frog always had a frown on his face. He grumbled and complained about everything, especially when the sun shone brightly.

One sunny morning, Grumpy Frog woke up feeling particularly grouchy. He hopped out of his lily pad and glared at the bright blue sky. 'Why is the sun always so cheerful?' Grumpy Frog muttered to himself. He didn't understand why everyone around him seemed to love sunny days.

As Grumpy Frog hopped around the pond, he noticed his friends, Happy Turtle and Joyful Butterfly, playing and laughing in the warm sunshine. Happy Turtle was basking on a rock and Joyful Butterfly was fluttering from flower to flower. 'What's so great about the sun?' Grumpy Frog grumbled.

But then, something caught Grumpy Frog's eye. It was a big, glistening puddle from last night's rain. Grumpy Frog cautiously approached it and saw his reflection. He noticed how his dark green skin contrasted beautifully with the blue sky and the vibrant green reeds. Grumpy Frog had to admit, it was a pretty sight.

Curiosity got the better of Grumpy Frog, and he couldn't resist hopping into the puddle. The water splashed around him, wetting his belly and making him giggle. For the first time in a long while, Grumpy Frog felt a spark of joy.

With a newfound appreciation for the sunny day, Grumpy Frog decided to explore more. He hopped over to a sunlit patch of grass and laid down on his back, letting the warm rays soak into his skin. The sun felt wonderful, like a cozy blanket hugging him tightly.

Grumpy Frog couldn't resist the urge to hop from one sunspot to another. He hopped and hopped, feeling the gentle warmth on his back. The more he hopped, the happier he became. Grumpy Frog finally understood the joy that the sun brought to everyone.

From that day on, Grumpy Frog became a little less grumpy and a little more appreciative of the sunny days. He learned to find joy in simple pleasures like hopping in puddles, basking in the sun, and spending time with his friends. And whenever Grumpy Frog felt a frown coming on, he just closed his eyes and remembered the beauty of a sunny day.