this is a movie about burger mexicanos, you know the ones, they sneak into America unseen by the naked eye, then they take over. They start out small, taking up residence in shitty downtown apartments and working at your local sleazy speakeasy's, but before you know it they are buyin' up property left 'n right, to plant their evil cabbage gardens in.
I have a theory that they are genetically implanting their impure southern blood into these cabbage gardens in an effort to mutate and crossbreed the species, in essence, it is their intention to use a giant cabbage monster to take over the world.
You too will be assimilated, your physical form replaced with rotten cabbage tendrils, your mind blanked in order to make room for one thought and one thought only - "cabbbbaaagggeee".
Congratulations, now you're an American.