Open Wide tells the story of a father and a son fighting to upend the world of orthodontics. In their mind, the world's faces have become severely deformed and must be restored to their beautiful ancestral proportions. Braces, for them, are a major part of the problem: the Mews loudly proclaim that the appliances push faces back and make them unappealing. John Mew's dental license was revoked a few years ago by the UK General Dental Council. He lives alone in the moated castle that he built, where he pushes his orthotropic movement forward from the desktop computer in his cramped office. Mike Mew is unequivocally his father's Plan B, and has dedicated his career to proving John right. He turned orthotropics into mewing, which first gained popularity in darker corners of the internet before becoming a full-blown online sensation from Reddit to TikTok. But now the British orthodontic establishment is coming after him too: Mike faces his own imminent General Dental Council trial, and the verdict could determine whether orthotropics lives or dies.