In the past, monsters were friendly creatures that lived together and visited children at night to tell stories. However, one day a big argument over candy caused one monster to become very angry, frightening the letters of the alphabet away from the land of monsters. Over time, as the monsters could only say "GRRR!!!" and other scary sounds, children became afraid of them. A girl found the hidden letters and cared for them, and with the help of her monster friend who pretended to be mute, they went around returning letters to the other monsters so they could speak kindly again. The grumpy monster who started the argument was very old but happy to see the letters, and invited everyone to a big party to make up for