Today is Friday, and with an important meeting coming up next week, Momoko, a manager, is preparing materials with her subordinate Ota. However, no matter where she looks for the materials, she can't find them. Then, suddenly, the lights in the archive go out. Come to think of it, she seems to have seen a sign that read "Power outage due to equipment inspection." The door is electronically locked and won't budge. The other employees have gone home, and there's no charge for their phones. In this critical situation, Momoko and her young subordinate have to spend the rest of the night in the cramped, stuffy archive until Monday...