Villain Valentine wants to decimate the worlds population in order to save the planet. He does this by giving everyone Earth a free SIM card that once activated sends out a signal inducing 'rage', effectively making people ferociously try and kill each other. Eggsy infiltrates his evil lair, kills Valentine, stops the apolcapyse, and proceeds to have anal sex with a Scandinavian princess.
Happy ending, right?
Well, for a few minutes, Valentine actually does manage to set off the signal. This increases the urgency of Eggsy's mission, but also effectively means one thing: Valentine succeeded in decimating the world's population.
The film establishes through the church scene that it takes seconds for the signal to make people kill. Not minutes; seconds. This means that for those couple minutes that Valentine activated the signal:
Anyone with access to a firearm went on a shooting spree. Anyone with access to heavy machinery, tools, or sharp objects went on a rampage. Anyone driving a car would crash it into bystanders.
And for the worst part; most of the victims would be children.
The film shows the signal makes Eggsy's mum try and attack her daughter with a meat cleaver. Eggsy manages to relay a message to his mum to lock her infant daughter in the bathroom before it happens, but what of the other parents who didn't get such a message? Hundreds of millions of parents, teachers, paediatricians and carers will wake from the frenzy to find that not only were the children in their care brutally attacked and killed, but that they were the ones who did it. The suicide rate after this event would be astronomical.
By successfully activating his device, even for a few seconds, Valentine achieved his aim. The population of the earth would be decimated. The global trauma, unfathomable. For the survivors, nothing would be the same again.
Of course the film only shows a couple of public brawls, and in the second film everything is good as new. It's a fun spy action flick, which only makes this ending all the more jarring. Showing how the rage signal would have affected the world would have been an interesting bittersweet ending. Though, as Eggsy tells the dying villain at the end; 'it ain't that kind of movie, bruv.'
