The sequel to The Visitors reunites us with those lovable ruffians from the French Medieval ages who — through magic — are transported into the present, with often drastic consequences. Godefroy de Montmirail travels to today to recover the missing family jewels and a sacred relic, guarantor of his wife-to-be's fertility. The confrontation between Godefroy's repellent servant Jack the Crack and his descendent, the effete Jacquart, present-day owner of the chateau, further complicates the matter.

After a wizard's spell goes awry, 12th-century Gallic knight Godefroy de Papincourt, Count of Montmirail finds himself transported to 1993, along with his dimwitted servant, Jacquouille la Fripouille. Startled and perplexed by modern technology, the duo run amok, destroying cars and causing chaos until they meet Beatrice de Montmirail, an aristocratic descendant of the nobleman, who may be able to help them get back to 1123.

When the young detective Paul Nerteaux finds the third slashed female corpse of illegal Turkish immigrants, he decides to ask for support to the experienced dark retired detective Jean-Louis Schiffer to chase the serial killer. Together, they infiltrate in the Turkish mafia trying to find the answer to the crimes. Meanwhile, the worker Anna Heymes is being submitted to a brain treatment and has severe headaches and glimpses of memories and visions. When these two parallel events collide, disclose that the Turkish organization "The Wolves" is behind them.