Housewife Tsubasa lives with her husband and father-in-law, Osamu. The incident occurred during her husband's one-week business trip... As usual, Tsubasa was assisting Osamu with his meal when suddenly a massive earthquake struck, causing the door to jam, trapping them both inside the room. As the heat slowly sapped Osamu's strength, Tsubasa found herself having to care for him by any means necessary...
