On a dark and rainy night, the narrator was reading a book when they heard a noise and saw a terrible monster outside their window. They went to ask their parents for help, and the family hid together. While observing the monster, they heard someone enter the house - it was a scientist. The scientist realized they were frightened and created a red liquid that he threw on the monster, causing it to melt away. The narrator has never seen that monster again and wonders if they will see another.