Starring one of France's most-loved character actors, Lino Ventura, A Pain In The Ass follows a hitman who just can't get the job done. Ventura, playing hitman Ralf Milan, checks into a hotel in Montpellier to take out an important witness. Unfortunately, his neurotic neighbor, whose wife recently left him, has other plans. Jacques Brel, a popular singer of French songs, plays the neighbor.