Numerous shots from various angles of houses in different stages of burning. Shots of fire-fighting. Several scenes of a brick house burning. National Research Council scientists and Fire Marshall's men in evidence (location: Altsville, Ontarion, abandoned houses before the flooding for the Saint Lawrence Seaway), winter. Interior shot of burning house, woman on stairs terrified of the flames. Interior shots of burning house, man asleep being asphyxiated by smoke. Interior shots of man staggering through smoke-filled room. Exterior shots of Fire Marshall's men and National Research Council officials examining ruins after fire.