Mapleton, Colorado's police chief, Gordon Hepler, would rather be on the streets than behind a desk, but he promised his late mentor he'd accept the position. And to Gordon, a promise is a promise, even if the person you made it to isn't around anymore. However, doubts creep in, and he wonders if he was shoved into the job because his mentor thought he couldn't cut it on the streets. Everything changes when a fatal traffic accident well outside Mapleton...