Best friends Josh and Lloyd are doing their best to make it through the sixth grade without attracting too much negative attention. In their free time, they start a blog to encourage any friendly aliens in space to come visit them on Earth. There’s no way it will work, but they figure if it somehow does, it would make them way cooler than their archenemy, Quentin.
Imagine their surprise when two extraterrestrials actually show up during Josh’s birthday dinner! They are butthead aliens -- and yes, they literally have butts for heads. (Their native language is farts. Frrt!)
At first, hosting visiting aliens is awesome, even if it’s getting the boys into a lot of unexplainable trouble with adults. But then things start getting really messy. Their crazy science teacher is starting to sniff around, and Quentin is threatening to expose their secrets. Even worse, they realize that the aliens aren’t so friendly after all: They’ve actually come to take over the planet. Crap! Can Josh and Lloyd get them to leave -- or is it the end of life on earth as we know it?