This study aims to outline different nuances of professional agency manifested among student teachers when research skills studies and teaching practice are integrated, and discuss its implications for bridging theory and practice in teacher education. Professional agency was examined as narrative practice in student teachers' texts (N = 79), in a sociocultural context of Finnish research-based class teacher education. The results from data-driven analysis revealed dynamics in the student teachers' voices: enthusiasm, uncertainty, rejection, and anticipation, which illustrate professional agency that is enacted, limited, opposing, and open. The study underlines the importance of carefully designed programmes and support for students to help them integrate theory and practice in teacher education by learning research skills.