"On one level, it's about a girl who is captured by goblins, and a brave miner boy and his magical great-great-grandmother rescue her.
"On another level, it's about a girl who is rescued by her faith, her courage and her belief."
Ms Triggs said some cast members played two roles.
She said: "One of the themes of the story is that the humans and goblins think they're really different but they're actually quite similar, so I've symbolised that by having some humans play goblin roles as well."
Goblin Glump, played by Ian Alldis, during filming at Binham Priory of The Princess and the Goblin by the Goblin Market Theatre Company. Picture: DENISE BRADLEY