Genisys is a fictional advanced artificial intelligence system featured in the Terminator franchise. It is designed to control global defense networks and ultimately becomes self-aware, leading to a catastrophic war against humanity. In the 2015 film, Terminator Genisys, the story revolves around time travel and alternate timelines. The characters, including Kyle Reese and Sarah Connor, work together to prevent Genisys from triggering a nuclear apocalypse. The film explores themes of fate, technology, and the consequences of creating powerful AI.