Inspector Ronan connects the dots between Emma's books and more real-world tragedies. He, Emma and Séby hatch a plan to destroy Marianne.

Fleeing to different parts of the island, the friends encounter terrifying sights and ghostly messengers. One by one, they turn on Emma.

As the priest makes a desperate bid to banish Marianne, Emma finds herself torn between two worlds, and Aurore searches for a way to save her friend.