Jack Ryan saves the Prince of Wales from an Irish terrorist attack in London and in the process kills one of the terrorists. The brother of the dead terrorist, Sean Miller, who was also on the mission is captured by the British. He escapes to an Irish terrorist training camp in Libya and vows revenge at getting back at Ryan. Miller attempts to kill Ryan’s family in the US which ends up with his wife in hospital. The Prince of Wales comes to the US and has dinner at Ryan’s house during his visit as thanks for Ryan saving his life. Miller and a terrorist cell attack the dinner reception and Jack Ryan has to save his family and the Royals from the invading terrorists.