A filly resembling Nightmare Moon is found in the castle of the two sisters.

When a brony with a troubled past is pulled into equestria and turned into a pony. With no known way out he must figure out how to make a living there before its too late.

A human was pulled into equestria and the ponies had rejected him to the point of death

When a brony with a troubled path is pulled into equestria he needs to learn how to fit in