A device reads the hidden currents of time. Elisa Navarro makes it work, and three institutions decide what she must do with what she has seen.
The Oculus does not predict. It reads — and reading is a form of power that nobody who holds it agrees to share. A research consortium wants the instrument. A religious order wants the record. A government would prefer neither existed. Elisa wants to understand what she saw, which turns out to be the one thing none of them can permit.
Oculus Temporis is the Sun book of The Septem Codex: a thriller about visibility, rule, and the price paid by whoever does the seeing. The celestial mechanics, the calendar systems and the archival traditions behind it are drawn from the historical record rather than invented for the plot.