What are some common words, phrases, idioms or slang to describe a story that has an unoriginal, formulaic plot?
E.g. someone's reaction upon seeing such a TV show is: This is totally _____.
You could say that it is cliché.
(in art, literature, drama, etc.) a trite or hackneyed plot, character development, use of colour, musical expression, etc.
You could also use "trite", which basically means "common and overused".