I'm unclear whether or not this logline suggests well enough that the protagonist is actively searching for the undercover cop...
spoiler: they find brotherhood in mutual hatred
“When their parents begin dating, a high school loser and the head cheerleader who torments him must team together to break up their parent’s budding relationship or end up brother and sister.”
A great format. But If they aren’t arch-enemies, blood-rivals, what’s holding them back from their parent’s happiness
They shouldn’t be able to stand each other
I see it. It’s not as black and white as your idea, but nuanced isn’t bad. Then they’re also very different characters. You could show the different worlds they live in.
Great set up. I can see the movie already. Suggestion: “Two high school rivals” “two high school arch-enemies” Plural form of nemesis = nemeses. So nemesis is not, technically, accurate.