M is none too thrilled with the events of Bond's Mexican excursion, especially as it makes the proposed merger between MI5 and the more top-secret MI6 a reality, which will threaten to take out the 00 series of spies in favor of using hi-tech surveillance equipment like satellites and drones.  This ends up resulting in a grounded 007 getting injected with a substance that allows his whereabouts to be tracked at all times so he doesn't go rogue again, which, of course, he's going to disregard.  However, Bond is on a mission, along with Dr. Madeleine Swann, the daughter of a Bond villain who allies with him, seeking revenge for her father's death, leading him to have to infiltrate a massively powerful underground crime organization known as SPECTRE, run by the umbral Austrian criminal terrorist, Franz Oberhauser, who may have had a hand in all of the super-spy's most recent foibles.