Paris, December. A conductor of a choir is found mysteriously murdered, with burst eardrums. Lionel Kasdan, a police inspertor the verge of retirement, and Frank Salek, an official of Interpol, embark together on a hunt for the killer, and also to a secret organization specializing in kidnapping children.
A duo of acrobats go onstage one last time, united under the spotlights even as their harmony backstage is broken.
