This paper is intended for studying the thermal effects of transient magneto hydrodynamic Casson liquid stream with presence of heat transfer through inclined parallel plates. The examination reveals various vital parts of flow and heat transfer. The partial differential equation which governs the conditions of the motion of the moving body is changed to standard differential conditions. The flow emphasizes and heat transfer attributes for different inferences of the representing parameters viz. the parameters Casson, heat source, Hartmann and Prandtl's numbers are explored. It was revealed that heat source and magnetic field alters the flow prototype and increments the fluid temperature.