The definition of contrived is something that seems made-up or forced, or that doesn't ring true.
When a plot of a movie or book is far-fetched and doesn't ring true, this is an example of a plot that would be described as contrived.
too obviously the result of forethought and planning; forced; artificial
Obviously planned or calculated; not spontaneous or natural; labored: a novel with a contrived ending.
- simple past tense and past participle of contrive