Jimmer "JD" Dobbs is back in town after spending the summer "upstate." No one believes his story about visiting his aunt, and it's pretty clear that he has something to hide. It's also pretty clear that his mom made a new friend while he was away---a rescued Rottweiler that JD immediately renames Johnny Rotten (yes, after that guy in the Sex Pistols). Both tough but damaged, JD and Johnny slowly learn to trust each other, but their newfound bond is threatened by a treacherous friend and one snap of Johnny's powerful jaws. As the secrets JD has tried so hard to keep under wraps start to unravel, he suddenly has something much bigger to worry about: saving his dog.