Set against the backdrop of the high-pressure world of advertising, Mason (Eric McCormack) and Conner (Tom Cavanagh) are a pair of ad men who, although they differ greatly in their approach to their work and their lives, are better together than they are apart. Mason, an art director, is a responsible, workaholic family man with an undying loyalty to the brands he helps sell. By contrast, his writing partner, Conner, is a single, impulsive copywriter with the attention span of a teenager. The series follows the changing dynamics between these two friends.