Since she can remember, Invita has been a slave, but through a twist of fate, she masters the art of reading and writing. She is also unafraid to express her opinions. Now she works in the house of the governor in Trier, where her temperament and stubbornness often land her in trouble. It's no surprise, then, that Invita is immediately suspected when one of the slaves disappears without a trace – surely the young woman must have a hand in it! To avoid punishment, Invita begins her own investigation and soon uncovers an unexpected secret...