The celebrated soprano Flavia Petrelli returns to Venice after almost 15 years. A reason to be happy. However, her comeback is overshadowed: a boat has been set on fire. The Opera's director is in dispute with the union and blames the latter for several attacks. But when a young costume assistant dies, Brunetti realizes that there is more at stake. When he discovers a hiding place with an observation camera, it becomes manifest: Flavia Petrelli has a stalker! Apparently, the stranger wants to stage her stage performance as an unforgettable event. In return he does not shy away from violence. Is the soprano herself in danger in the end?