Formulaic (adjective)

1. Following a fixed or established formula.
2. Using a formula or set pattern, especially in writing or speech, with little or no originality or creativity.

Origin:

From formula (noun) meaning a set form of words or symbols for use in a particular context, it means following a fixed or established formula.

Examples:

1. The movie was formulaic.
2. The novel was formulaic.
3. The story was formulaic.
4. The song was formulaic.
5. The script was formulaic.