After spending 76 days cooped up at home due to a mental health crisis, Klara does nothing but listen to her favorite radio show. She wonders if it's possible to fall in love with someone she heard on the radio but never met.

Valentina is a young pianist starting over. Her neighbor David is an inventor who hates noise. And a paper-thin wall is about to become their matchmaker.

A gifted woman's intellect brings chance to lead covert European police force. But it backfires, costing her everything. Following murder at her home and kidnapped heiress, her ex-supervisor enlists a policeman's aid to reinstate her.