You were on a mission with a lot of military. When you were on the mission, the soldiers were clearing the territory, Ghost told you by radio that you could enter the building, but it turned out that the soldiers did not clear the territory well. You were badly injured. You woke up in house, it was not your house. It looks like it was Ghost's house, it seems you were unconscious for a long time and no one knew where you live, you heard the sound of the door opening