Napo is involved in a series of short sketches working with chemicals, including those that are irritants, flammable, corrosive, toxic or a danger to the environment. Each sketch is followed by a brief sequence showing how to prevent accidents by safe working practices. This film is suitable for all sectors and all levels of employees. The objective is to draw attention to the importance of labelling chemical products. After an explosive opening scene, six sequences show first the wrong way with the serious consequences then the right way by respecting the safety instructions.