Very very dark comedy. Rainn Wilson is superb in his role as a deeply troubled EMS who yearns to get out of his chosen field, struggling with the burnout inherrent in it, he finds himself being an unwilling tutor to a new young recruit doing a ride a long. Right from the start the two do not get along, made only worse by Rainn's co-worker - an eaually jaded EMS also looking to get out. By no means is this a perfect film, but it's got some really touching moments that brought me to tears.