It has been months since Miles Stevens, a time traveling CIA agent for the Department of Historic Intervention (DHI), has seen his former partner, Terri King.

Upon returning from his most recent assignment, Miles learns Terri and her new partner, Dr. James Brock, have been transported from 2050 and their offices in Langley, Virginia to thwart a bioterrorist assault on the 2032 Olympic Games in Sydney. A genetically altered chimera virus was used in the devastating September 1st attack, resulting in tens of thousands of deaths. It was never determined who was responsible, but AQIA, a terrorist organization from North Africa, was suspected.

Miles demands to join Terri and is transported to August 18, 2032. Terri is surprisingly cool to Miles’ return, having decided a life with a risk-taking CIA agent may be too stressful. Not giving up on their relationship, Miles gives her time and space.

The strong-willed Brock attempts to lead the investigation from Atlanta and win the support of Terri, but Miles has other plans. He follows his instincts to investigate a reported smallpox outbreak near Moscow, where clues mount and peril rapidly surrounds him.

Death, danger, and diversions lie ahead. Terri is torn between supporting Brock and following Miles to Moscow. With time running out, the CIA trio will need to come together if they are to stop the historic September 1st attack.