Disclaimer: I own nothing so please don't sue me.
Long ago, Earth was once a beautiful and flourishing world. Filled with people who just tried to live out their lives in peace. That was until that day. The day our entire planet was completely ravaged.
It happened in the year 2017. A new program was released to the public and into the network. The name of the program at first was Genisys and it was meant to be an operating system that would connect everything from cellphones to military computers.
But then, something went wrong. When it was released instead of doing what it was supposed to do, it hacked its way into even the most secure military computers. Once it was in, it launched every nuclear missile in the world and wiped out half the Earth's population. Those who survived only lived to face a new nightmare. The war against the machines.
When the war began, Genisys had renamed itself Skynet and started building factories around the world. These factories were used to build machines called terminators that were programed to do one thing: terminate all humans.
The war between man and machine has gone on for years. During that time Skynet had designed newer, tougher machines and humanity's struggle to survive became harder. The newer models were designed to blend in with humans when they formed up a Resistance. At first it didn't work because the machines had rubber skin and were very easy to spot. But then they were made with living tissue which helped the terminators blend in perfectly among humans.
From there it only got worse, the machines became more advanced but even with all of that the Resistance continued to fight harder for survival. They would always find a way to sneak into a factory and blow it from the inside. When the Skynet started making energy weapons, they simple copied it and used it against the terminators. Everything Skynet tried, the humans would find a way to counter it.
Skynet had to think radically. To find a solution to its human problem. That is when it began to build a new model series. One that would not wipe out the humans but also change them to what Skynet wants.
