This is a completely looney Japanese horror oddball movie released in the Eclipse Shochiku set. It’s cheap, weird and highly entertaining, also atomic-bomb-obsessed and weirdly Vietnam War-referencing, with stock footage edited in at key moments.
The most doomed flight of all time encounters a UFO, receives a bomb threat and hosts a gun-toting hijacker at the same time. Large-faced hijacker Hirofumi has little effect as the plane flies through red skies filled with crazed engine-clogging birds then crashes, killing the pilot and leaving first officer Sugisaka in charge. On the ground, the hijacker runs off and gets possessed by aliens in his forehead (recalling Jeffrey Combs in From Beyond), while the bomb-threat fella hides his bomb and claims he was only kidding.
Potential bomber allowed to roam free:
The gov’t rep gets homicidal:
So the survivors are hiding in the plane from alien vampires who appear to kiss people to death (Yuko Kusunoki of Dodeskaden and Kurahara’s Thirst for Love is next to be captured/possessed) except for psychiatrist Kazuo Kato (Kurosawa’s Ran) who wants to go outside and study the aliens, while government representative Mano (Eizo Kitamura of the Yakuza Papers parts 2 and 3, and Modern Porno Tale: Inherited Sex Mania) proves to be a bigger asshole than the aliens or hijacker, getting people killed in order to save his own skin. Bomber dies blowing a hole in the side of the plane, and American Mrs. Neal (Kathy Horan of Genocide and The Green Slime) comes after the vampire with a rifle and loses. When our hero Sugisaka (with his woman on his arm) finally lights the hijacker on fire, the alien oozes out of his forehead and possesses Rep. Moto’s underling then kisses Moto to death.
Sugisaka and the girl leave the crash site and find out they were about a mile from civilization, but everyone in the city has been killed by aliens – much more efficient aliens than the one attacking the downed plane, I guess. Burned bodies and atomic blasts are invoked in the apocalytic finale.
Sugisaka was Teruo Yoshida, in Ozu’s An Autumn Afternoon a few years earlier, must’ve starred in too many horror movies in 1968-69 (including this, Horrors of Malformed Men, Inferno of Torture and The Joy of Torture) because he disappeared from the screen in 1970, and his loyal stewardess was Tomomi Sato of the 1979 Jigoku remake and Blackmail Is My Business.