This is a strange story...A picture of 16th century French oil painting of famous queen Margaret exhibited in Shanghai art gallery.Lin Hai is a student who is studying French at university. He was unexpectedly faint when he saw the painting. More strange is that, when he went to library to lookup materials about Margaret, encountered a mysterious man, who wrote a line of French in his palm, which means "e;help me"e;! Lin Hai feared. He found a roll of hand painting parchment in the interlayer of old attic, written with obscure medieval French. Lin Hai sought help from suspense writer "e;I"e;. Orleans, professor of the University of Voltaire in France is also interested in it, invited "e;me"e; to Paris to identify the parchment.However, thrilling days is waiting for "e;me"e; in the romantic city.At the same time, what happened in Shanghai is even more incredible: Lin Hai went to the art gallery before conclude of exhibition; he saw the emerald eye Margaret was coming out from the oil painting...... She was the ghost imprisoned by oil painting for four hundred years? On April 30, 1574, what happened in Paris' night? If "e;Louis IX's puzzle"e; will be published? If the predictor Nostradamus can changes historical events? Where is the big secret? Margaret, the queen Margot who experienced Huguenot war and St. Bartholomew's night, if the big secret holding by her will be revealed? "e;Margaret's secret"e; in the context of French culture, reasoning in interlaced spatio-temporal numerous and complicated clues, aiming to embody eternal true love, throughout with mysterious and romantic atmosphere.