Detective Jaswinder Singh, a Metropolitan Police Officer, has returned to work from gardening leave. His reputation for solving cases in the most unorthodox of manners has made him many enemies within the police. Unfortunately for them his methods always achieve great results with all his cases being solved.

Sarah, a civilian manager at the police station, enlist Jazz's confidential help in finding out what is happening with her husband, Derek, who worked in the Police Protection squad and may be being blackmailed. Although he has few friends in the police force as he is considered a rule breaker and a cocky individual, Jazz does have two colleagues that have remained loyal to him despite all that has happened. He also has an informant Mad Pete, who reluctantly comes across with information when pushed by Jazz. It is revealed that Derek is into S&M and belongs to an exclusive S&M club where the blackmail could be happening. Taking advantage of Derek being away Jazz decides to go undercover in the club to see what he can find out.

This alerts MI6 and it would appear that a large undercover operation was about to take place and Derek was under scrutiny as a potential traitor. Now established in the mess and causing chaos for MI6, Jazz is incorporated into their strategy for the operation but told to keep out of the way. This is never going to happen, and the unorthodox, fearless and some would say stupid, Jazz must now take on MI6, an S&M club and a terrorist group each one of them potentially out to kill him.