The Vanguard's Lair

Sam and her mysterious guide arrived at the base of a massive structure, its walls shimmering like glass yet solid as stone. Inside, it was a hub of activity—men and women in futuristic attire working at terminals, monitoring screens that displayed images from different points in history.

"This way," the man said, leading her to a room filled with strange, ancient artifacts.

"Who are you people?" Sam asked.

He removed his helmet, revealing a scarred face. "We're the Temporal Vanguard... and you're about to join us."