An alien ship appears in the Teixcalaan space and it becomes a sign of worry from the first moment when it is seen. The main cause of worry is that the alien race is not making any kind of communication with the humans. No one knows what the purpose of the alien fleet is, whether it has come with a peaceful notion, or does it wants to invade. Hibiscus i.e the captain of the fleet in space becomes really worried.
If he fails to stop the aliens from moving forward then there is a chance that millions of people would die on the planet later on. The captain has sent many troops for the diplomatic procedure but there has been no answer from the aliens. Amy Landon has narrated a very serious human captain in the story because the tension is creeping into his mind. He does not want to fight or launch an attack on the aliens but they have left him with no choice.
Finally, the captain sends one last delegation for negotiation after which only the sound of the guns would be heard. A Memory Called Empire will make the fans learn about the story by Arkady Martine. These books talk about the missions which usually take place in outer space and the human race present in the colony or on the planet far away are usually unaware of the calamity which is approaching.
Most of the time the heroic deeds performed by the warriors remain hidden from the eyes of the masses. In outer space, nothing is safe so one has to remain vigilant and active all the time.