United States Air Force fighter pilot Major Lloyd "Ace" Gruver, the son of an
Army general, is stationed at
Itami Air Force Base near
Kobe,
Japan. He has been reassigned from combat duties in
Korea by General Webster, the father of his fiancée, Eileen. While Ace and Eileen have been together for years, their relationship has become strained. Airman Joe Kelly, Ace's enlisted crew chief, is about to wed a Japanese woman, Katsumi, in spite of the disapproval of the
military establishment, which will not recognize the interracial marriage because it is generally
illegal under American law. The Air Force, including Ace, is against the marriage. Ace and Joe have an argument during which Ace uses a
racial slur to describe Katsumi. Ace eventually apologizes, then agrees to be Joe's best man at the wedding. Ace falls in love with a Japanese entertainer, Hana-ogi, who is the lead performer for the all-female "Matsubayashi", a
Takarazuka-like theater company, whom he meets through Katsumi. Eileen realizes that Ace's attentions are no longer focused on her and begins a friendship with a famous
Kabuki performer, Nakamura. After overhearing that Joe's house has been under surveillance by the Army, she believes that Ace is in danger and goes there to warn him. Joe suffers further prejudice at the hands of openly hostile Colonel Crawford, pulling extra duty and all the less attractive assignments. When Joe and others who are married to Japanese are targeted for transfer back to the
United States, Joe realizes that he will not be able to take Katsumi, who is now pregnant. Ace goes to General Webster and pleads Joe's case, asking that he be allowed to remain in Japan. When the General refuses on the grounds that he cannot allow an exception, Ace says that he will be in the same situation, since he intends to marry Hana-ogi. Eileen and her mother are present for the exchange, and Ace apologizes for hurting her. Eileen realizes Ace never loved her the way he loves Hana-ogi and leaves to see Nakamura. Joe and Katsumi's home is raided up by the military police and Ace is taken into custody by General Webster, where he is confined to quarters. He is told that he will most likely be sent back to the United States and Hana-ogi will be sent to
Tokyo. Joe goes
AWOL, and two Military Police seek Ace's help to find Joe through his local connections so he can be sent back to the U.S. and not be reported missing, which could lead to charges ranging from deliberately missing a movement — a serious offense in wartime — all the way to
desertion. Ace, accompanied by Captain Bailey, finds Joe and Katsumi who had secretly returned to their home and committed double suicide rather than be parted. Hana-ogi later arrives unnoticed and alone outside Joe and Katsumi's home. There, she opens a window and, still unseen, whispers a tearful "sayonara" to Joe, Katsumi, and Ace, although nobody hears her. Hana-ogi then leaves through the rear gate. After exiting Joe's home, Ace and Bailey are attacked by Japanese holding
anti-American signs. However, sympathetic Japanese neighbors intervene to help the Americans, resulting in widespread fighting in the street. Ace and Bailey escape during the scuffles. The loss of Joe and Katsumi strengthens Ace's resolve to marry Hana-ogi, and Ace goes to the theater company to find her. There, he learns Hana-ogi has already left Kobe for Tokyo a week ahead of schedule. General Webster, believing the crisis with Ace is averted, apologizes for what happened to Joe and Katsumi and says that laws will soon be passed to allow interracial marriages in the United States. Ace leaves Kobe and flies to Tokyo. He tracks down Hana-ogi at her new venue in a Tokyo theater and pleads with her again to become his wife. They leave the theater and Hana-ogi announces to the waiting Japanese and American reporters that they intend to wed. When a military newspaper reporter asks Ace how he will explain his marriage to the "big brass" as well as to the Japanese, Ace says, "Tell 'em we said, 'Sayonara.'" ==Cast==