The story of Adèle, a youg woman who’s literally haunted by the death of her husband, killed in a trench during World War One. Desperate and unable to face this tragic loss, Adèle turns to black magic in the hope to bring her lover back. The miracle will happen, but Adèle will have to pay the price for opening this Pandora Box.
Eva, an ex-dancer, is now living in a wheelchair, unable to walk. When her friend Sophie gives her an old wooden antique advent calendar before Christmas, she realizes each window contains a surprise that triggers repercussions in real life: some of them good, but most of them bad... Now Eva will have to choose between getting rid of the calendar or walking again… even if it causes death around her.
As a newly arrived pianist starts rehearsing, her neighbor starts a sound war that very rapidly brings all the neighbors to their windows. While everyone shouts at each other, the pianist plays till she faints. When the police witness the crowd of hysterical neighbors shouting at each other, they take the side of the pianist, who, after a moment of intense madness, is now playing a serene Mozart piece.
Four childhood friends are reunited when one of them surfaces after twenty years, forcing them to confront a creature straight out of a spine-chilling Moroccan legend.