Well it was not “something similar” because the difference is that R1 plot is in fact about stealing the plans, while TFA plot is in fact about blowing up death star.
Regardless of how you rationalize it you still accused the film of having a different plot than the one that are actually in the film just like Alderaan.
Alderaan thinks the plot of RO is “there’s a bunch of characters, including some villains.”
A “plot” is the entire sequence of events in a story. It is not a one sentence summary that describes the protagonist’s goal.
You’re welcome for the free tip.