Invasion literature is a type of story where the people of a country or place are invaded by people from another country or place. In the story, the characters from the invaded place often have to fight against the invaders to protect their home and their way of life. Sometimes the invaders are trying to take over the country or place to become the leaders and rule in a different way. Many of these stories will also usually show the people of the country or place coming together as a strong unified group in order to fight against and protect themselves from the invaders.