This qualitative case study aimed at describing the level of students' metacognition in problem-solving using problem stories in the materials of the linear equation system of two variables of VIII class at MTs N 1 Pesawaran Lampung. The participants of the study comprised three students in VIII class of MTs N 1 Pesawaran Lampung in 2019-2020 academic year. In the selection of the participants the purposive sampling method was utilized. The data were collected via collection a test and an interview. For the data validation the triangulation technique was adopted. The results showed that the level of students' metacognition in problem-solving via story problems in the materials of linear equations of two variables was at the level of reflective use, strategic use, and aware use.