"H.R. Pufnstuf" introduced the Kroffts' most-used plot scenario of a fairy tale of good versus evil, as well as their second plot scenario of the stranger in a strange land. The show centered on a shipwrecked boy named Jimmy, played by teenage actor Jack Wild. He is 11 years old when he arrives on the island and turns 12 in the episode called "The Birthday Party". Jimmy and a talking flute named Freddy take a ride on a mysterious boat, but the boat was actually owned by a wicked witch named Wilhelmina W. Witchiepoo (played by Billie Hayes) who rode on a broomstick-vehicle called the Vroom Broom. She used the boat to lure Jimmy and Freddy to her castle on Living Island, where she was going to take Jimmy prisoner and steal Freddy for her own purposes.