In the sultry underbelly of Miami, where corruption festers and legends walk the shadowed streets, Lex Vega—a once-celebrated homicide detective cast aside by her own department—finds herself haunted by the ghosts of her past. Now exiled to the forgotten shores of Key Largo, Lex endures a dead-end job and the crushing weight of regret while struggling to reconnect with her estranged teenage son, Danny.

When a series of brutal, ritualistic murders rattles the island—each scene marked by a single, sand-covered flip-flop—the whispers of a ghostly assassin begin to stir. The locals speak of "The Devil in Flip-Flops," a mysterious figure who once defied the cartel and paid the ultimate price. As Lex pieces together the grim puzzle, she discovers a shocking truth: the victims were all tied to a massacre from a decade ago, and the killer's vendetta runs deeper than revenge—it is a quest for a dark, unyielding justice.

Driven by the desperate need to protect Danny and confront the sins of her past, Lex embarks on a relentless investigation that pulls her back into a world of danger and betrayal. Facing off against corrupt officials, rogue ex-cops, and a cartel that will stop at nothing to cover its tracks, Lex must navigate a treacherous landscape where nothing is as it seems, and every step is haunted by a legacy that refuses to fade. In a high-octane blend of crime, horror, and supernatural suspense, The Devil Wears Flip-Flops is a spellbinding tale of redemption, vengeance, and the unbreakable bond between a mother and her son—a story where the past never truly dies, and the Devil always leaves his mark.