A "napping house" is a cozy place where everyone is sleeping peacefully. In this house, various characters, including a child, a dog, a cat, and even a mouse, find comfort and rest. Each character adds to the warmth and tranquility of the scene. As the story unfolds, the napping house becomes a lively setting when a wakeful flea disrupts the peaceful slumber. This playful interruption leads to a chain reaction, waking everyone up in a humorous and engaging way. The tale highlights the joy of napping and the fun of unexpected surprises.