Sydney's apartment. Requesting for technician. She is rendered unconscious. DOCTOR: Find him and remember the time when you were both happy... A time that was meaningful... Go back, Sydney... Find him... Sydney seems to be resisting, yet the scene transits to flashes of Vaughn in the plane (Search and Rescue)
SYDNEY: (whisper) Vaughn...
[SCENE_BREAK]
Cut to Sydney on the plane. She walks out. JACK: Ok. Then use your underworld contacts. Now I want the map of SD-6. Scene cuts to her hypnotised. The captor's face is revealed: It's Irina. In Hungary, Jack and Renee are in a black car in front of the building where Sydney is presumably held. After walking down a red stair, she discovers that she's on a ship at sea.
Plan: A: Madrid; Q: Where was Sydney abducted? A: Her interrogators; Q: Who used memories of Vaughn to probe Sydney's mind for the secret of The Horizon? A: The Horizon - an element; Q: What is the secret of the SD-6 organizational chart? A: Jack; Q: Who traces a contact to a nursery set up in an otherwise empty building? A: her interrogation chamber; Q: Where did Sydney flee to find herself on a freighter out at sea? A: Irina; Q: Who is the person behind Sydney's abduction and interrogation? A: Philippines; Q: Where is Irina? Summary: Sydney is abducted in Madrid. Her interrogators use memories of Vaughn to probe her mind for the secret of The Horizon - an element of an SD-6 organizational chart she saw only once. Jack traces a contact to a nursery set up in an otherwise empty building. Sydney flees her interrogation chamber to find that she is on a freighter out at sea. Irina, currently alone and resting in the Philippines, is revealed to be the person behind Sydney's abduction and interrogation.