A routine visit to the dentist for identical twin teenage sisters (Chloe and Cadi) leads to more than just discomfort.

An endearing outlier, Brian lives alone in a Welsh valley, inventing oddball contraptions that seldom work. After finding a discarded mannequin head, Brian gets an idea. Three days, a washing machine, and sundry spare parts later, he’s invented Charles, an artificially intelligent robot who learns English from a dictionary and proves a charming, cheeky companion. Before long, however, Charles also develops autonomy. Intrigued by the wider world — or whatever lies beyond the cottage where Brian has hidden him away — Charles craves adventure.

Beca sees a ghostly figure of a young girl appearing around her rural hometown. The ghost seems to want Beca to help her in some way. Curiosity leads her to the house of an elderly neighbour, and Beca soon realises what she has to do.