Emma, 26, owes an incredible amount of money to her creditors. Misanthropic but in over her head, she invents a passion for the Middle Ages to get a job at Les Oubliettes restaurant. After a series of strange events threaten to close the restaurant, the employees notice something special about Emma. Could she be the chosen one foretold by the Prophecy? At the crossroads between fantasy and the "real life" of the restaurant business, Emma finds herself reluctantly having to save the restaurant and its employees, who turn out to be the most loyal and brave people she's ever met.