Throughout Apple Cider Vinegar, journalists are investigating Belle. One of them, a journalist named Justin (Mark Coles Smith), learns about Belle from his partner Lucy (Tilda Cobham-Hervey), who takes solace in Belle's feed while she’s undergoing breast cancer treatment—and even decides to pause it altogether and try alternative remedies.

The is billed as a “true-ish story based on a lie" and is inspired by a 2017 book, “The Woman Who Fooled the World,” by two investigative journalists, Beau Donelly and Nick Toscano, who explored Gibson’s deception.