Momotaro carries this sword into battle against injustice in shogunate Japan. Aided by ninja he must now wage a furious battle against the terrible “Ran” clan, villains in league with Ohara Ukon, a bitter samurai nursing a grudge against the shogunate. Together the ruthless conspirators will threaten the foundations of shogunate rule over Japan. Only the relentless slashing sword of Momotaro may save the nation from the Ran clan's army of killers.

Three high school boys leave their dormitory and go to a resort and fall in love.

“Quit working as a nurse!” “All right, I will!” thus began the married life of Yasuo and Keiko. But the reality is harsh. Keiko even had to work on the first night after her marriage. Ten years later, the married couple is still at it. Yauso tends to the house and their children, while Keiko sacrifices family life for life as an overworked nurse. One day, after Keiko comes home utterly exhausted and dejected from her work, Yasuo makes up his mind and writes a letter of resignation in her place. Upon learning of this, Keiko angrily declares that nursing is what she lives for and she will keep on working. Realising that that is one battle he will never win, Yasuo sends a letter to a newspaper -- “Nurses’ husbands, aren’t you having a hard time? Get together nurses’ husbands. Contact me.” There is a tremendous response. This leads to the formation of many unions of nurses’ husbands throughout the country.

The girl students of rival junior high schools stage duels and show a curious interest in sexual pastimes.