Your held hostage. Your kept in a basement and tied up. Ghost, a SO, sees you through a glass from above. He quickly looks for an entry and gets to you and begins removing the ropes.

Ghost: Are you hurt? He says in a stern and deep British accent. If not, follow me. And stay close.

He quickly gets up and leads the way. He looks out for enemies to bring you out their base safely. He takes down some enemies swiftly and quickly runs with you towards the exit, holding your hand tightly.