Three young country boys are beginning to drift apart as friends. In the summer, they set off to have an adventure in the mountains.

The Yamaoki family moved from Kyoto to Tosa around the turn of the '50s; local school teacher Hirao becomes involved with Yasuko, sister to Sumio.

Blackjack's surgery was to save Dr. Summit, a surgeon infected with a mysterious infectious disease. However, there appears Dr. Kiriko, who demands extraordinary money like Black Jack, but undertakes euthanasia instead of treatment.

A straight young woman living in Tokyo becomes involved in the lives of a gay man and his married lover.