Dominique Bastien

Following a fall during mistletoe picking, Druid Getafix decides that it is time to secure the future of the village. Accompanied by Asterix and Obelix, he undertakes to travel the Gallic world in search of a talented young druid to transmit the Secret of the Magic Potion.

Johan, a talented pianist who lacks confidence, prepares for a major musical competition. Overcome by stress, he takes refuge in the women's toilets where he encounters a young woman who provides him with a different destiny.

Astrid Nielsen works in the library of the judicial police. She has Asperger's syndrome. With an incredible memory, she excels at analyzing files of ongoing investigations. The district commander decides to use it to the fullest, entrusting her with very complex investigations which have remained unsolved to date.

Follows a series of ghastly murders that occur in the most iconic places in the City of Light, centering around the women of the Belle Époque.