In Kingsman: The Secret Service, a young man named Eggsy is recruited into a secret spy organization, where he learns the ways of the elite agents, battling a villain who plans to take over the world with a deadly tech device.

A key moment comes when Eggsy, after intense training, is forced to make a life-changing decision. He must prove himself worthy of being a Kingsman agent by going through a brutal test involving loyalty and survival. This moment is a turning point, showing how Eggsy transforms from a street-smart kid to a true agent, willing to sacrifice everything for the greater good.

Fan theories suggest that there’s more to the villain, Valentine’s backstory. Some believe he wasn’t always a bad guy and was manipulated into villainy by outside forces, making his motives more tragic than evil. What if he had been recruited by the Kingsman in the past and was betrayed, leading him to his destructive path?

In an alternate ending, Eggsy could have chosen a different life, leaving the spy world behind, or perhaps teaming up with Valentine in a more complex alliance. A prequel could explore the origins of the Kingsman agency, revealing the first recruits and their adventures in the early days of the organization.