To be clear, “at Shoreline” refers to a specific movie theater (probably the Century Cinema on Shoreline Blvd in Mountain View), not a different movie.
Ah, my bad. I read that section three times and still missed that, and feel quite dumb now.
I think the lesson here is not that you misunderstood (which is completely understandable, no reason you should know the name of a local theater) but rather that it's never a good idea to assume the worst reading of a situation.
And also that a movie messenger app might need to be smart enough to know if you know all the local movie theaters?