A ronin named Manji lives alone in an apartment without a bath. One day, his sister-in-law Harumi runs away from home and barges into Manji's room. Ignoring the bewildered Manji, Harumi heads to a public bathhouse. Since she is a regular customer, Harumi convinces the owner Sasaki to let her bathe before opening hours. However, Harumi gets too excited in the bath after such a long time and ends up overheating and unable to move. Manji rushes to help her but then female customers enter…
