Three aliens travel to Earth in preparation for a mass invasion, taking possession of human bodies.

As vanguards of an invasion of the planet three aliens take possession of host bodies and assume human form. With superior technology, skills, strength and endurance the invading species is learning quickly and is sure to overwhelm the people of this planet. Unexpectedly, however, there is one force that could neuter the offensive.—aghaemi

Narumi (Nagasawa) is on bad terms with her husband, Shinji (Matsuda), when, one day, Shinji goes missing. He comes back a couple of days later, but he seems like a totally different person; now gentle and tender. Meanwhile, journalist Sakurai (Hasegawa) covers the story of a family that was brutally murdered, when an unexplained phenomenon takes place. Shinji tells his wife that he came to Earth to invade.