Teresa is a thoracic surgeon in Spain. Recently, her and her team operated on a patient to extract two tumours from her right lung.
The work of Teresa and her colleagues is precise, tense. They operate "in the dark", with their eyes fixed on three monitors that relay the images caught by a surgical camera. The surgery team is composed of Teresa, as lead surgeon in the operation, a resident doctor to support her, two nurses, and an anesthesist that keeps the patient stable.