Many ecosystems are facing environmental threats. Some of the main concerns are now focused in developing countries. Strong environmental messages by numerous stakeholders have led to varied responses on environmental issues. Companies, governmental agencies and NGOs are responding to such issues by developing campaigns to promote sustainable practices amongst key stakeholders. Green advertising is one important form of communications employed to elicit environmentally friendly attitudes and consequently promote behavioural change. This study analyses the effect of a sponsored cinematographic green advertising strategy by a NGO and a major supermarket chain in a Latin American country. Based on in-depth interviews with Colombian movie audiences, this investigation demonstrates how (1) a movie focused on nationalistic identification can effectively provoke positive attitude change toward environmental sustainable practices, (2) the movie's media format can heighten audience interest about adopting environmental sustainable practices and (3) these results benefit positively the two movie sponsors through association and affect transfer.