One Splendid Hour: While on a "slumming" excursion, debutante Bobbie Walsh (Viola Dana) falls in love with tenement-district doctor Thornton (Allan Simpson). Not wishing to scare the doctor off, Bobbie doesn't tell him that she's the wealthy daughter of a prominent senator. But when Dr. Thornton ends up in night court after punching out a pair of would-be mashers, Bobbie is forced to reveal her true identity. The expected resentments arise, leading to the inevitable reconciliation. Star Viola Dana's final film.