The concepts, i.e., Change, Event, and Action are elusive in nature. These concepts are not something that are found to be used only in the discipline of Philosophy to explicate metaphysical and ethical concepts like object, world, space, time, cause, effect, morality, responsibility, punishment, intention etc., rather their use is quite pervasive across various other disciplines such as Sociology, Anthropology, Psychology, Cognitive Science, and so on and so forth. This stance has ignited the theoreticians to explicate these three concepts in an unambiguous and explicit way. And this book that embodies one of the perspectives of that sort makes an exploration into the concepts, i.e., change, event, and action by taking the help of the theoretical tools available in the field of Deontic Logic.