This study was conducted to determine the capability and challenges of master teachers of Lun Padidu National High School in the new normal. The research was quantitative utilizing survey guide to determine the capability of master teachers and qualitative using semi structured interview to gather the challenges of master teacher in the new normal education with eight (8) respondents. The data gathered showed that in general, the capability of master teachers is very good in doing their duties and responsibilities but good in conducting in-depth studies on teaching-learning innovation and fair in conducting action research on teaching-learning innovation. From the interview, four themes were emerged: work overload, stress, negative attitude towards research and limited knowledge on action research. Master Teachers Development plan was developed to strengthen the weak points of master teachers. Specifically, it aimed to provide opportunities to develop the master teachers professionally since their capabilities will benefit the school just as much as it will benefit them as an individual.