In the 50's and 60's Frank Sinatra was the head of the infamous "Rat Pack".

This clique of famous crooners, who worked and played together, also included Sammy Davis Jr., Dean Martin, Peter Lawford and Joey Bishop.

The film concentrates on their volatile relationships with each other, the Kennedys, Marilyn Monroe, mobster Sam Giancano, Judith Cambell and the FBI.

The film depicts Sinatra helping John F Kennedy to get elected in 1960 with a little help from Giancano.

A tangled web sees Lawford, married to a Kennedy, as an unhappy go-between, whilst Cambell is sleeping with both Giancano and JFK, who is also sleeping with Monroe.