Tsubasa, a housewife who lives with her husband and father-in-law. – The incident happened during her husband’s weekly business trip … – As usual, when Tsubasa assists Osamu with food, she is suddenly hit by a big earthquake, and the doors are not set up properly, and the two are trapped in the room. – Tsubasa becomes a squirrel who takes care of her father-in-law by all means while Osamu is gradually deprived of her physical strength by the heat.