Constant storms have already damaged Bombora's coastline and no end is in sight. When rising tides force "Vaga," the beloved beachfront restaurant, to finally close it is seen as a grim omen. Community rifts deepen, old friends clash, and some flee the idyllic suburb for safer ground, while others stand firm, defying the increasingly erratic weather.

Mick, a charismatic local figure, faces a family crisis as he grapples with the impending threat. A chance encounter with Renata, an old schoolmate, and her son Guil, a local surfer, forges an improbable alliance. As a menacing storm looms on the horizon, Mick and Guil rally Guil's surfer friends to form a ragtag "tinnie army." When the tempest strikes with unrelenting force, it triggers a chain of events that will alter their lives forever.