Ambient Engine deliver power by sucking heat from atmosphere and convert to useful energy for energy generation, automobiles and powering the Drones for unlimited period of time without refueling. The proposed idea utilizes the ambient heat to energy and can produce energy while on the go eliminating the need for heavy battery storage system. Inspired by the natural process of rain where water absorbing heat from ambient atmosphere for phase change is the technology behind the idea. Utilizing the atmospheric temperature to change fluid to gas in an ORC turbine and generate energy from it and cool the working fluid using an external air conditioning system. The vacuum created is also utilized for energy generation using James watt steam engine principle. The idea utilizes a low boiling liquid as working fluid so that it absorbs heat from atmosphere for expansion.