Whatever you do, keep that glowing slug away from your ear, or you might find yourself playing passenger to the slimy little pilot. Lucky for Simon, a nerd needing a break, this bizarre creature has a single-minded focus: serving its master, him. Thanks to the slug's mind control abilities, his step-sister Jenny suddenly can't help but find it perfectly normal-if not slightly frustrating-to be his go-to for all sorts of "relief." Meanwhile, a brainy scientist is very eager to lend a hand in every sense of the word. But while life gets steamy and a bit crazy, the lurking mystery of the slug's true origin could turn Simon's newfound paradise into a nightmarish fight for survival. The question is: how long can he keep the upper hand when things turn slippery?