Line Man unfolds in a quaint village where Nataraj, affectionately known as Nattu, serves as a lineman in Sattipalli, nestled in the picturesque Karimnagar district. The narrative takes a delightful turn when Nattu decides to honor the remarkable 99-year-old Devudamma, renowned for her exceptional skills in aiding pregnant women during childbirth. However, the village’s tranquil existence is abruptly disrupted by an unforeseen electricity predicament, throwing Nattu’s plans and the villagers’ daily routines into disarray.