I have heard authors lament again and again. They were working on a project until they saw or read a story with a nearly identical plot. That leaves them feeling that what they are working on is redundant, even useless. Many end up tossing their work in progress and beginning something else, all because they saw something similar.
Well, a few weeks ago I saw something similar. I watched the Disney Pixar animated film, Onward. I had never seen the story before, but I practically wrote it.