Bo is a transexual prostitute in Brussels who left home after being abused by her father. She's infuatuated with a neighbor and suspected by the police in a series of transexual murders. In order to clear herself she must turn detective.
Bisexual attorney Alain is bedding his female boss, his murderer client, the client's hairdresser girlfriend, and a precocious boy who knows what he wants and tries to convince Alain that he can 'have it all'.
The Assassination Bureau has existed for decades (perhaps centuries) until Diana Rigg begins to investigate it. The high moral standing of the Bureau (only killing those who deserve it) is called into question by her. She puts out a contract for the Bureau to assassinate its leader on the eve of World War I.