 Cio-Cio San blissfully awaits the lieutenant's return, unaware that he had not considered himself bound by his Japanese marriage to a Japanese woman.When he arrives back in Japan with an American wife in tow and discovered that he has a child by Cio-Cio San, he proposes to take the child to be raised in America by himself and his American wife.The heartbroken Japanese girl bids farewell to her callous lover, then kills herself.