In 2003, in the Longview State Correctional Facility, the criminal Marcus Wright is on death row, and is convinced by the cancerous Dr. Serena Kogan to donate his body to her research and he accepts. In 2018, after an unsuccessful attack to a Skynet facility, only John Connor survives, but he discovers that Skynet is developing the powerful new model T-800. Out of the blue, Marcus appears naked and with amnesia in the location. Marcus befriends the teenager Kyle Reese and the girl Star who help...

When John Connor (Jason Clarke), leader of the human resistance, sends Sgt. Kyle Reese (Jai Courtney) back to 1984 to protect Sarah Connor (Emilia Clarke) and safeguard the future, an unexpected turn of events creates a fractured timeline. Now, Sgt. Reese finds himself in a new and unfamiliar version of the past, where he is faced with unlikely allies, including the Guardian (Arnold Schwarzenegger), dangerous new enemies, and an unexpected new mission: To reset the future...

A cyborg is sent from the future on a deadly mission. He has to kill Sarah Connor, a young woman whose life will have a great significance in years to come. Sarah has only one protector - Kyle Reese - also sent from the future. The Terminator uses his exceptional intelligence and strength to find Sarah, but is there any way to stop the seemingly indestructible cyborg ?