Queen Aggravain has ruled that none may marry until her son, Prince Dauntless marries. However, she has managed to sabotage every princess that come along. When Sir Harry and Lady Larken learn that they are going to be parents, wed or not, he goes off to the swamps and brings back Princess Winnifred ("Fred" to her friends).
Yes! The movie Once Upon A Mattress is now on Disney Plus in the countries listed below.
| Directing | Kathleen Marshall | Director |
| Writing | Marshall Barer | Musical |
| Costume & Make-Up | Christopher Hargadon | Costume Design |
| Writing | Mary Rodgers | Musical |
| Production | Coreen Mayrs | Casting |
| Writing | Jay Thompson | Musical |
| Writing | Janet Brownell | Writer |
| Camera | Robert McLachlan | Director of Photography |
| Editing | Scott Vickrey | Editor |
| Writing | Dean Fuller | Musical |
| Production | Stephanie Gorin | Casting |
| Production | Marc Platt | Executive Producer |
| Sound | Mary Rodgers | Songs |
| Sound | Mary Rodgers | Music |
| Writing | Marshall Barer | Lyricist |
