Like the title, the show is about a spy organization recruits an unrefined, but promising street kid into the agency's ultra-competitive training program, just as a global threat emerges from a twisted tech genius. The street kid, Eggsy (Taron Egerton) whose dad died in the final Kingsman examination takes on the training under recommendation by Harry Hart, or better know as Galahad (Colin Firth)
You should actually watch it. If you are a fan of action, adventure and comedy all mashed into one gentleman genre, then by all means go for it. It is after all, the best movie you can watch over here. Then again, it is kinda violent so if you don't have the stomach for it, you might want to go easy on your food intake.
TL;DR: Suit is everything.