Professor Samuel Hunt arrives in the picturesque Spanish city, where time seems to slow down, and is intrigued by the narrow streets, squares with an atmosphere of the Middle Ages, the silence and calm. But does this peaceful atmosphere conceal some longstanding dark secrets? A young man, formerly known for his honesty, has recently been caught stealing treasures, and now some local families have renewed wounds of past grievance, the secrets of which have been taken to the grave. However, if the professor is to find the answers he seeks, he is compelled to unravel the entangled threads. Professor Hunt finds a mysterious music box, an iron door in the church which has not been opened for a hundred years, and a series of strange letters - but will the Lost Sword of Toledo be found?
The fourth game in the episodic AGON series, and the first to be released as a standalone boxed game, following the bundled release of the first three episodes in AGON: The Mysterious Codex.