Write a scene or story in which your main character discovers she is not who or what she thought she was. This could be an identity crisis, a realization of true authority, or even a disillusionment of supernatural nature.
Astronaut Clayton Anderson (Photo credit: Wikipedia)
A story is all about a character's personal growth and discovery. Sometimes that discovery is subtle. With this prompt, you take the subtlety out.
Try to make us, the readers, feel the outrage or excitement or disgust or whatever the character feels when she makes her discovery.