Meloda (Saira Banu) who was educated in India, speaks Hindi; though she is Japanese. Dr. Gautamdas (Rajendra Kumar) is a UK trained doctor who volunteers to go to Japan to help deal with the horror of the radiation aftermath of Hiroshima and Nagasaki. They meet in Japan and the inevitable happens when hero meets heroine. Lord Bertrand Russell in London, gives Gautam his blessings and best wishes for his travel to Japan. Russell , a pacifist and anti-war thinker (who appears in a cameo role) sets the tone of this 1967 film. On arrival in Japan Dr Gautamdas takes up a role in a hospital where Meloda's father Dr Akhira (Chetan Anand) is director. The storyline takes us through the stark and sometimes gory suffering that radiation victims endured; as a stark reminder of the long term damage caused by atomic weapons.