Parker Backsteps to prevent a collapsed dam from killing people, but when under the influence of alcohol lands in the middle of an execution, letting a serial killer escape. Frank insists on taking on the investigation to make up for his screw-up.

Olga and Ballard attend a royal wedding. While there, there's an explosion so Frank is sent to stop it. They assume that it was an accident. But what they don't know is that someone is trying to stop the wedding.

An unknown confrontation between a U.S. Navy ship and a Chinese sub lead to total destruction and lose of life on both vessels and heightened tensions between the countries. Parker must somehow convince two head strong Naval officers to do otherwise.