The Plot: When John Connor (Jason Clarke) sends Kyle Reese (Jai Courtney) back to 1984 as per Terminator lore, everything's changed: Sarah Connor (Emilia Clarke) is now a battle-hardened soldier accompanied by her own Guardian Terminator (Arnold Schwarzenegger). As the time-leaping continues, it transpires that John's future has also changed: he's now a man-machine hybrid intent on ensuring Skynet's supremacy. Why It Shouldn't Exist: There's definitely a time travel joke in here somewhere about literally erasing Terminator Genisys from existence, because the film takes a steaming dump on not only the series' two best movies, but completely erases the two more recent ones from history as well. While baddie John Connor is a fairly bold attempt to reinvent the series, it just doesn't work: the trailers stupidly spoiled the surprise months ahead of time, the action is dull, the time travel logic non-existent, and only Arnie and J.K. Simmons manage to escape with their dignity in tact. Jai Courtney is a terrible Kyle, but surprisingly it's the outrageously miscast Clarke who gives the worst performance here as a distractingly cherub-like Sarah Connor who blinks when she shoots.