For 50 years, "Outer Man" has been a cultural icon in Japan, a superhero TV series as ingrained in the national psyche as Ultraman. Generations have grown up watching the heroic Outer Man defend Earth from the monstrous Sylvie Seijin. But the line between fiction and reality blurs when a giant alien, identical to Outer Man, descends upon Tokyo.

The wife of a tycoon, Suomi, suddenly disappears. Upon learning of her disappearance, assembled at the mansion where her husband lives are five men who have loved her. But they each describe their version of "Suomi" very differently, both in appearance and personality. So, who exactly is the real Suomi?