A new Premier is elected promising to clean up corruption. He sets up a taskforce headed by a traffic cop thinking he won’t get far. But Inspector Riordan opens up a can of worms and won’t let it go – all the way to the top.
The plot of his illegitimate son Mordred to gain the throne, and Guinevere's growing attachment to Sir Lancelot, threatens to topple King Arthur and destroy his "round table" of knights.