In a sense, loop quantum gravity is modest in its scope. But when you consider it more carefully you begin to realise that, if it is indeed the correct description of reality, then it is not so much that events take place within space and for a duration of time, but rather that the universe, and everything in it—all matter and energy—is nothing more than quantum fields coexisting and superimposed onto each other. And these fields do not require space and time to exist in, since spacetime is itself one of these quantum fields.
