Ember Stone, was the perfect teenager with a perfect life. But until she takes a job at Disneyland and discovered something serious, she's stuck roaming the now dangerous streets of the happiest place on earth, after the park closes. When she meets some people there who happen to be in her situation too, they do all they can to solve the problem they never would imagine was true as they struggle to get away from fake weapons which now appear to be very real. Can Ember and her friends make it out alive or will they be stuck roaming the palace after hours forever?