The residents of Ponyville are nice and accepting to all, they have had many encounters with evil creatures before so attacks are nothing new for them, if anything they expect it. But they did not expect for a masked human child to be dropped off at Twilight's doorstep, and they also didn't expect it when Twilight said she was going to keep him as a son. This follows the life of an insane Masked Human who is raised by Twilight.
I am using the thing where cartoon characters don't age but the human does to add some feels to it all.