Tanisu and Aisuri clash over household responsibilities. Tanisu agrees to do all the housework himself, but gets lost running a simple errand.

After learning that the owner of their new house is coming back, Tanisu and his family return to their old home in search of medicine that will make the others appear human.

The landlord takes the family out for a day in the mountains. But the side effects of Ashisu and Aisuri's medicine begin to show themselves...

While Ashisu attempts to stop Aisuri's rampage, the sisters reflect upon the divergent paths their lives have taken as guinea pigs for their parents' experiments.