Once upon a time, in a big city filled with tall buildings and busy streets, there lived a little mouse named Micky. Micky loved exploring the city every night, but he always felt sad seeing how people hurried past each other without noticing anyone else.

One day, as Micky was scurrying through the park, he noticed a little girl named Lily sitting alone on a bench. She looked sad, and Micky couldn't help but feel sorry for her.

With his tiny paws, Micky crawled up to Lily and softly squeaked, 'Why are you sad?' Lily looked surprised to hear a talking mouse, but she smiled. 'I lost my favorite toy, and I can't find it anywhere.'

Micky's heart went out to Lily, and he promised to help her find the lost toy. They searched high and low, peeking into bushes and under benches. Finally, they found the toy squirrel hidden in a flower bed.

Lily's face lit up with joy, and she thanked Micky for his help. Micky realized that by being kind and helping others, he could make a difference in his big city. From that day on, Micky became the leader of a group of animals who helped anyone in need.