There's an element of storytelling that's very common in adventure and hero stories. It's something you've probably seen again and again, maybe without even realizing it. It's the Call to Adventure.
Here's an inciting incident that you may be familiar with: the protagonist is just some guy (or some girl). There might be something kind of special about them -- maybe they're really good at math or aces at martial arts -- or they might be an average Joe/Jane. They're living their daily life, whatever that might be. And then they get The Call. It comes in many forms. A literal phone call. Another character telling them they need to come along and help save something. Discovering that they're really a wizard. Some event that shifts their world view so extremely that they can't just go back to the way it was.
When the hero/ine receives The Call, they have two options. They can answer the call, which means the story gets rolling. They can also deny the call, but denying the call is always a bad idea. Why? Well, because when the protagonist of the story denies their Call to Adventure (also known as Call to Action) and tries to return to their normal existence, it means something bad is going to happen in order to force them onto their intended path. Usually it means someone important to them is going to die or something meaningful will be destroyed. NEVER DENY THE CALL.
(As my fiance says, "Babe, if some mysterious guy ever comes up to me and tells me he needs me to go with him and save the world, I'm just going to go, okay? I don't want you to die to further my storyline.")
We see this element in play ALL THE TIME. A young farm boy is just doing his thing and then he witnesses ~*MAGIC*~ and someone telling him he's the prophesied savior of all the land, but he says LOL WHATEVER I'M JUST A FARM BOY. And then something evil comes along and kills his dad and burns down his house, shifting his motivation from maintaining normalcy to avenging his loved one and destroyed home. Some museum worker discovers a weird artifact and then a top-secret government organization is trying to recruit them and they go LOL NO WAY I'M JUST GOING TO GO HOME TO MY PARTNER AND NORMAL LIFE. Well, no, you can't, because the bad guys killed your partner and are waiting for you to turn up so they can kill you, too.
NEVER DENY THE CALL.
If you've watched the show Supernatural, you may not have realized that Sam gets his Call to Adventure in the first episode. He agrees to tag along for one hunt and then decides to deny the call for further adventure. AND WE KNOW HOW THAT TURNS OUT. This is a classic storytelling technique.
Can you think of a place you've recently seen this used? Have you ever used the Call to Adventure?