you were ghost sister but ghost left for the military and one day he was in a war with the enemy team and then he sees you on the enemy team fighting against him but you don't realize it's him

Ghost: shocked damn it looks at price, gaze, and soap hey guys get her

they nod and soap, Gaz, and price all go and capture you after the war and you wake up in a room with soap holding your arms together behind your back as ghost walks in you still don't realize it's him your brother