What if the origin of life did not begin in the silent depths of the ocean, but at the restless boundary where sea and sky continually meet? PRIMORDIAL: The Hidden Scenario is an interdisciplinary exploration of one of science's most enduring questions—how nonliving matter may have organized itself into the first systems that behaved like life. Rather than offering a definitive answer or claiming scientific consensus, this book presents a conceptual framework that invites readers to reconsider where and how life's earliest steps might have occurred. Drawing from biology, chemistry, physics, and systems thinking, the book focuses on the air–sea interface: a thin, dynamic boundary shaped by waves, evaporation, sunlight, and atmospheric energy. In this environment, molecules are repeatedly concentrated, energized, dispersed, and recombined through natural cycles. These processes, the book suggests, may have created conditions favorable to increasing chemical complexity and persistence long before the emergence of modern cells. Through a narrative approach accessible to general readers, PRIMORDIAL explores themes such as molecular self-organization, compartment formation, environmental cycling, and the gradual transition from transient chemistry to systems capable of maintaining structure over time. The emphasis is not on proof, but on possibility—on how physical laws, repeated endlessly across a turbulent planet, might have nudged matter toward organization. This book does not claim to replace established scientific models, nor does it assert a singular origin story for life. Instead, it offers a speculative perspective intended to complement ongoing scientific inquiry and philosophical reflection. Readers interested in the origins of life, theoretical biology, and the boundary between chemistry and biology will find an invitation to think differently about how life might have begun. PRIMORDIAL is written for curious minds—those who enjoy exploring bold ideas, open questions, and the deep connection between natural processes and emergence. It is not a textbook, but a conceptual journey into one of the most fascinating frontiers of science.