The comedic tale of two minions of the devil who crash a Harlem party thrown by Miss Maybell with high hopes of destroying its festive atmosphere. The first of the imps to arrive, Trinity, loses sight of his mission and consequently falls in love with Miss Maybell's impressionable young niece Earnestine. Trinity is later joined by Brother Dave, his older, more jaded partner. But as Dave pulls out all the stops to dampen the mood, he serves only to enhance the partygoers' good spirits.