In this article, Kant's ethics of duty and Nietzsche's understanding of master/slave morality was analyzed in the context of the philosophy of happiness and evil problematic from the viewpoint of moral philosophy of the Winter Sleep film, directed by Nuri Bilge Ceylan and won the Golden Palm Award in the 2014 Cannes Film Festival. Cinema give audience pause for thought by showing the visual presentation of the intellectual debates of philosophy. The aesthetics offered in cinema paves the way for ethical inquiry. The aim of this article is to analyze the relationship between cinema and philosophy by conducting film analysis with philosophical background. Through moral questions from cinema, the moral regime was tried to be read through the aesthetic regime. Kantian theoretical framework of duty ethics problem is drawn in the text. 'Good' and 'helpful' behaviors of the figures in the Winter Sleep have been analyzed according to Kantian duty ethics criteria and the suitability of these behaviors to the universal moral order have been analyzed. Discourse analysis was conducted based on the philosophical debates and questions in the Winter Sleep through the connotation and denotation of the dialogues. Then, discourse analysis was conducted on philosophical debates in Winter Sleep. As a result, the answers to these questions were found in Kantian homework moral theory, Nietzsche's master / slave morality distinction, Adorno's criticisms at Kant and Nietzsche's thoughts in this field and Heidegger's philosophy on thinking. The cases contrary to Kantian ideal moral principles can be explained by Nietzsche's theory. Nietzsche overrides the normative basis of invariant ethical principles in Kant. Therefore, selfish behaviors that are suitable for 'power demand' are explained. The tendencies that can be explained by Nietzsche's theory of master / slave morality have also begun to discuss the 'good' concept of Kantian natural law. In this article, the Winter Sleep film is analyzed by philosophical analysis via the comparative evaluation of Kant and Nietzsche.