Aging roué Arthur Merrill meets flapper Penelope Stevens on an ocean liner and decides to undergo rejuvenation surgery so that he may enjoy life again. Transformed, he attends a wild jazz party given by Penelope and persuades her to visit his apartment, but he finds that she is a "good girl" and only flirting. After he gives Penelope a scare and a lecture, her old beau, Brock Farley, enters with a letter to Arthur that reveals Brock to be his son. Arthur gladly steps aside, renounces his wild living, and returns to a simple life.
| Actor | Role |
|---|---|
 Adolphe MenjouArthur Merrill | Arthur Merrill |
 Eleanor BoardmanPenelope Stevens | Penelope Stevens |
 Conrad NagelBrock Farley | Brock Farley |
 Jean HersholtDr. Eustace | Dr. Eustace |
 Edward ConnellyBates | Bates |
| JJerome PatrickJerry Hall | Jerry Hall |
| JJohn PatrickBowers | Bowers |
 Hedda HopperMrs. Stevens | Mrs. Stevens |
 Miss DuPontYnez | Ynez |
 Virginia Lee CorbinFlapper | Flapper |
| BBradley WardTed | Ted |
 Dorothy DwanRita | Rita |
 Frank ElliottSir Donald Ramsey | Sir Donald Ramsey |
 Anna LutherMimi | Mimi |
| PPeggy ElinorEstelle | Estelle |
 Eugenia GilbertChérie | Chérie |
 Mary AkinPeggy | Peggy |
 Estelle ClarkCarmelita | Carmelita |