Sylvester "Sly" McMahon is a depressed sixteen-year-old teen who wants nothing more than to die. He's saved from a suicide attempt by a mysterious stranger, who later turns out to be his not-so-angelic guardian angel Cliff. A chain-smoker with a penchant for sarcastic wit, he's determined to save Sly from himself. Sly is less than thrilled with the idea of staying alive. The two have to learn how to tolerate each other, even while Cliff keeps stressing the idea that the purpose God has set out for the teen isn't yet fulfilled.