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.

Apple Cider Vinegar is based on the true story of Belle Gibson, a social media influencer who rose to fame by falsely claiming she had terminal brain cancer. She operated under the handle @Healing_Belle, where she amassed hundreds of thousands of followers by chronicling her story, which initially seemed both tragic and inspiring.