Deployed via Time Displacement Equipment by Skynet to 1984 simultaneously with the events in 1984, this unit follows an alternate mode of tracking Sarah Connor via internet access to the "most current" phone book.
It was lead to a gallery in Los Angeles where it finds records of Sarah's planned honeymoon in San Francisco and her rolodex of contacts. There, the 4th Sarah Connor is plotting to murder Micheal, her artist husband, for a massive inheritance. There is an aged Resistance fighter named Ellis Ruggles, who was sent back in 1955 to watch over Sarah Connor in case another Terminator arrives.
The Amazon starts a wild killing spree at Sarah's hotel. Sarah flees to the studio of Alex Gander, her San Francisco murder accomplice, where the Terminator methodically tracks her (4th S.F. contact in the Rolodex). Engineering an escape from the carnage at the studio by dropping massive industrial artwork on the Terminator, Sarah flees to the streets in a cab. The Terminator pursues on a motorcycle until run off the road by the cabbie just short of a police roadblock where her husband Michael is waiting. Ellis Ruggles and his current animal companion, Peanut the pet monkey, snatch Sarah and Michael from the roadblock as the Terminator lays waste to the police, covering them with a grazing shot from his Fazer.
Explaining the Skynet, the future war and the threat the Terminator poses, Ruggles plans to sneak the Connors out of the city on the ferry. The Terminator tracks them to the boat and a battle ensues after it crashes a helicopter onto the deck of the outbound ferry. Ruggles ends up in the water with his anti-Terminator weapon, mortally wounded. Knowing he has only one shot, he gives his life to mostly disable the Terminator. Sarah, attempts to use the battle to kill Michael but the barely functioning Amazon's last act is to grab her leg as it falls in the water, dragging her to her death. Peanut and Michael Connor survive in the end.