Sushi: Once an expensive gourmet food, now a global fast-food phenomenon. Whether you get it from an Asian snack bar or a supermarket to-go box, sushi is trendy. It’s low in calories, healthy, and affordable. But sushi consumption also brings problems. This documentary is a journalistic investigation into the supply chains of salmon and tuna, the two most popular sushi ingredients. The film takes us on a journey from contested tuna fishing grounds in the Indian Ocean to huge salmon farms in Northern Europe, as well as to the gigantic factories of the fishing industry. Near Gdansk, for example, some 115,000 sushi boxes are produced every day. That adds up to around 23 tons of ready-made sushi, some of which is destined for German supermarkets. Yellowfin tuna, which is particularly popular for sushi, is now threatened with extinction.