The pandemic has greatly affected the teaching profession in Quebec. The objective of this research project is to describe teachers’ experience during this pandemic linked to COVID-19. Twenty-five teachers participated to semi-structured individual interviews. This article specifically presents the case of one of the teachers in order to describe the complex analysis process by categorization, then, discuss the results based on the conceptual framework of competent action. The results present a sawtooth evolution of the teacher’s feelings, and the continuous adaptation modalities used in times of crisis. Also, results present professional learning in critical situations and their subsequent reinvestment.