Typical disaster flick. A storm of hurricane proportions devastates Scotland and moves along the coast on its way to London. Authorities are convinced the city is safely protected by the Thames Barrier but discredited scientist Leonard Morrison (Courtenay) thinks otherwise and turns to his estranged son Rob (Carlyle), an engineer, for help. In turn, Rob gets his ex-wife Sam (Gilsig), the operations director for the barrier project, to listen but it still isn't enough to prevent water, water everywhere.