A man and a woman have a conversation in a hospital waiting room on a late afternoon, with sunlight filtering through the trees. The woman's heart naturally flutters as she waits for her appointment, as the refreshing young man shows his casual consideration. The next time the two meet again by chance, they are in an elevator in the same apartment building. Then, the elevator makes an emergency stop! What will become of the man and woman who are suddenly trapped in a closed room?