French young man Eloy came to a remote island in the South Pacific to teach, but found that his knowledge was incompatible with the survival wisdom here. Children do not understand multiplication tables, but they can judge the weather from the color of clouds; they do not memorize French verbs, but they can recognize the names of dozens of fish species in the lagoon. Under the guidance of the girl Moana, the old principal Mathura and the elder Arioha, Eloi gradually understands another kind of "reason" - ancient knowledge written in the tides, engraved on tattoos, and woven in fishing nets. In the collision of two civilizations, he learned to walk on the intertidal zone: submerged at high tide and exposed at low tide, always looking for a balance between the two worlds.
Intention: The collision and blending of two "reasons" - the dialogue between the modern knowledge system and the traditional Polynesian ecological wisdom, and the possibility of finding a third way in the intertidal zone.