Techtrechea is a science-fiction movie that tells the story of a resistance group that rebels against the government to take back their freedom in a world which is flooded with the melting of glaciers in 2220. Since then, people start living underwater cities. The movie takes its name from a device that was created to allow people to breathe underwater and also used as dictatorship tool produced by the rulers to control others. To reflect the concept of underwater cities, circular and organic shapes are used inspired by dynamic movements of waves and water bubbles and is preferred to use mostly shiny surfaces to make audience feel wetness of water and for futuristic approach.