This story is a sequel to Thomas and Friends: The Magnificent Seven
Cornwall's economy is booming, and with it has come renewed demand for China Clay. The Falmouth engines all want to assist with the work, but strange things and new engines make the working environment a bizarre one. Can the Clay Pits be reopened, or will outside factors prove to be too much?
An adaptation of the Thomas and Friends special of the same name, this story also incorporates various true stories from the Cornish mining industry.