Happy Ending

Heh.

At the end of the Big Fight between the Hero, the Villain, and whoever else happens to be there, the Hero draws their weapon one last time, utters a Badass Line (optional), and finally puts an end to the Villain. Some time later, the Hero returns home and meets the townspeople who somehow got notified about the Villain's fall (maybe The World Is Healing is a sign that Evil Is Dead). One of the below happens next depending on what media the franchise is in.

In Books
The same thing as in movies, but instead of dancing or experiencing the Universe's first technical error in decades, the Hero, the author, or someone else either delivers a Wholesome Line or Speech to wrap up and properly end the story.

In Movies
The Hero kisses their loved one, remembers the Mentor's words if they died (99.99999999% chance they did), and does a little dance along with everyone else /freeze frames. Roll credits and we're done.