For years, Declan "Dex" Breen has lived on the wrong side of the law, chasing his pleasures whenever and however he can. But in the wake of a devastating accident, he finds himself with a mangled leg, and temporarily bound to a mobility scooter-haunted by feelings of boredom and worthlessness and ready to make a change.

So in order to escape his unsavory past, Dex decides to volunteer his time to the Guardians, a local telephone crisis hotline, as soon as his health will allow it. In the meantime, he deals with his restlessness by taking rides around the neighborhood on his mobility...