Luna descends the spiral stairs of Saltrock Lighthouse into a room that should not exist—a circular gallery lined with mirrors, each one showing her own reflection but at different ages. The mirrors do not reflect the room behind her. Some show a child she does not remember being. One shows an old woman watching her with wet eyes. The footsteps above her have stopped, but now she hears breathing from inside the glass. She tries to shatter a mirror with the iron handle of the Fresnel lens tool. The glass does not break, but the child in the mirror flinches. And the old woman begins to tap on the inside of her own reflection. Luna realizes the mirrors are not windows into time—they are doors that someone on the other side is trying to open. The episode ends with a single crack spidering across the surface of the oldest mirror, and a voice that sounds like her own whispering her full name from inside.
Luna opens the sealed letter and reads the first message from the vanished keeper, Elias Vane. The letter is not a goodbye — it is a warning. She finds a hidden room behind the Fresnel lens, lined with mirrors, each one showing a different time of day. The ship light on the horizon blinks in a pattern that matches no known maritime code. Luna discovers Elias Vane's logbook, and in it, a sketch of her own face, drawn forty years before she was born. The lighthouse is not empty. Something is climbing the stairs.
On a grey October afternoon, Luna arrives at the Saltrock Lighthouse to claim a position left empty for decades. The previous keeper, Elias Thorne, vanished in 1987, leaving only a sealed envelope addressed to his successor. As Luna explores the upper room, she finds a small mirror wedged behind the lamp housing and a single word written in dust on the glass — her own name. The episode ends with her turning the envelope over, the distant ship light flickering out, and the sound of a key turning in a lock that should have been bolted from the inside.
