"Henny Penny" is a popular children's story about a chicken who believes the sky is falling after an acorn falls on her head. She decides to tell the other animals, including Ducky Lucky, Goosey Loosey, and Turkey Lurkey, about her discovery. As they journey to inform the king, they encounter various challenges and characters. The tale often serves as a cautionary lesson about the dangers of jumping to conclusions and spreading panic. It highlights themes of fear, gullibility, and the importance of critical thinking, making it a valuable story for young readers.