Marco Russo embarks on a new relationship with his twin brother, Jacob, after a near-fatal accident leaves Jacob with verbal disinhibition: an inability to assess his thoughts before speaking them aloud. His remarks often spark anger in the people around him and cause endless embarrassment for Marco, who has taken on the role of Jacob's guardian and coach-a role that is further complicated when one of his co-workers falls head over heels for Jacob. Together, the three must learn to live life without a filter.