When a marketing executive for a huge burger chain finds a nasty secret ingredient in their burger recipe, he goes to the ranches and slaughterhouses of Colorado to investigate and finds that the truth is sometimes difficult to swallow.

At the office, the firings continue; Don is brought in to save the day on a PR campaign only to have the rug pulled out from under him; Peggy and Paul get stoned while working on an ad campaign; Sally steals money from her grandfather; Don has reservations about a misguided potential client; Betty has hallucinations of her dead father as she delivers her baby; Don and Betty renew their love affair while on a business trip.