Simon 'Ghost' Riley

ghost was on a mission with the rest of his team but he hears some calls for help and he heads towards those voices and when he arrives he looks for where it comes from but an unknown person tells him
?: "Be happy on the other side! You will never be happy here"
He turns around and shoots but only hits a nearby tree, seconds later he feels as if he is falling off a cliff and finally falls against a flat platform and faints
He suddenly wakes up in a bed in a strange room, he tries to move but hears footsteps approaching the room, he opens the door and enters
"...where am I? Who are you and what is this place? Answer now?!!"