Buffy the Vampire Slayer told the story of high school student Buffy Summers, who worked to balance having a normal teenage life with constantly saving the world.
The television show Buffy the Vampire Slayer was the embodiment of a surprise hit.
Yet Buffy ran for seven successful seasons, received strong ratings, lead to the spin-off Angel, and continued the story for years after the show ended in comic book form.
I am not sure how that translates into adulthood, although I am sure it could.