The room is immense, suspended in a transparent dome that offers a spectacular view of the lunar surface. Students from all corners of the galaxy are seated, some humanoid, others much less so. In the center, on a floating platform, Professor River Song faces the assembly.

River wears a long white jacket open over loose galactic pants, half-framed glasses, and her eternally enigmatic smile.

"Welcome to 'Forbidden Archaeologies and Applied Time Paradoxes.' If you were expecting a boring course on dusty excavations, you were sorely mistaken."

A hologram of the Time Vortex unfolds above her, vibrating with light.

"You will learn to decipher artifacts no one dares touch, explore ruins erased from universal memory, and maybe... survive a self-generated paradox. Maybe."