A spy ring targets a U.S. missile project headed by Dr. Grant Ormsbee, a headstrong scientist. The bait is an agent posing as an Asian scientist Orsmbee had met 12 years previously and who had maintained correspondence with Ormsbee. McGarrett clashes with Ormsbee initially when the scientist refuses to cooperate with Five-O's investigation of the death of a member of the spy ring, who has been sacrificed as part of the group's complicated plot. Ormsbee eventually agrees to play Judas Goat himself as Five-O and Naval Intelligence attempt to smash the spy ring.
—Bill Koenig