An unbeatable team of five teenage friends—the Peppercorns—bands together to uncover the truth behind the kidnapping of Jaswinder, an avid marine researcher who has pioneered a groundbreaking method to eliminate plastic waste from the oceans. What begins as a carefree summer holiday for 12-year-old Alice flips into high-stakes peril when she visits her friend Tarun. Jaswinder, Tarun's mother, falls victim to an attack at her research station: an unknown thief steals highly secret documents detailing her plastic-reduction discovery. Soon after, she vanishes without a trace from the research ship, igniting a desperate race against time to save her life and secure a cleaner future for the seas.

Alice and Tarun plunge into the investigation, clashing with the dubious garbage mogul Robert Fleckmann, who appears to hold unnerving knowledge of Jaswinder's work. Overwhelmed, they enlist the full Peppercorn crew—Jonny, Clarissa, and Hanna—for support, forging unbreakable bonds amid mounting dangers. Shot across Northern Ireland's lush landscapes and the Baltic coast, this pacy live-action adventure from director Christian Theede pulses with humor, gripping twists, and rousing action.