Ben is 30 years old today. Passionate about history, cultivated, shy, he has few friends outside his club of historical figures. Often mocked by his colleagues, he is nevertheless passionate about his work at the Tourist Office: driving the little train that embarks tourists to visit Nîmes. After a sad birthday party, he returns home when he spills a man with his car. Panicked, Ben approaches the unfortunate and discovers that he has overthrown a Roman gladiator who has traveled back in time until today.
Ben finds himself at the bedside of the unfortunate he has knocked down. He wakes up and the situation quickly becomes uncontrollable.
Ben feels guilty about what happened in the hospital and brings out the inanimate man he had knocked down. He wakes up in front of the Maison Carrée and rushes there.
After overthrowing a man dressed as a Roman soldier sought after by strange men in black, Ben brings the man in question to Diane, a doctor of ancient archeology ... who speaks Latin.
Ben, Diane and the gladiator Volesus fall on Ines, agent of the mysterious police of the time ... Pursued by strangers, the group hides safe, in a place where nobody will risk to attack them ..
After a journey through the underground, Volesus and his companions meet in the midst of gladiators / comedians in rehearsal in the Arena of Nîmes. But the CRS (French Riot Squad) find them, causing a rather unexpected event ...
Always pursued by mysterious individuals, Ben, Volesus, Diane, Ines and the (very) curious Thierry hide themselves in the future museum of the Romanity. Latinists can also learn a little more about the gladiator's past.
To save Diane, taken hostage by the mysterious "police of the time", Ben finds himself in front of a difficult choice ...
The vise tightens for Ben and his companions. Volesus faces his destiny, and Ines loses a loved one ..
A final episode of about 14 minutes where the past of Volesus is finally revealed ..
