The Joy of Singing (2008)

A banker has died He trafficked in nuclear material so French intelligence assign two agents to find his list of contacts which are on a flash drive Muriel the boss acerbic willing to sleep with any man wondering if she should have a child and Philippe younger boyish meticulous bothered by Muriels frank sexual interest They watch Constance the bankers widow a naïve friendly open trusting Shes taking opera lessons so the French spies join the class which Muriel enjoys It seems that other spies are after the same USB and some of them sing as well Singing spying and sex lead to duets of all kinds as well as to an eventual showdown