[1] The film is the second part of Mushi Production's adult-oriented Animerama trilogy, following A Thousand and One Nights (1969) and preceding Belladonna of Sadness (1973).

A manga adaptation of the film, also from Tezuka and Hisashi Sakaguchi, was released later that same year in October exclusively in COM, and was reprinted in late 2018.

[2] In the far future, three humans—Jirō Tani, Hal Witcher, and Maria Fellow—discover that an alien race called the Pasateli intends to conquer humankind with the mysterious "Cleopatra Plan".

In the middle of the Roman conquest of Egypt, a group of Egyptians secretly plot a rebellion to overthrow Julius Caesar.

The time travelers return to the future and report that the Cleopatra Plan is a scheme by the Pasateli to assume the form of beautiful human women to seduce and destroy Earth's most powerful male leaders.

The Pasateli have already taken their human forms and are poised to strike when this information arrives, but Earth is able to root them out and save the world in time.

Howard Thompson of The New York Times said it was basically a movie that involved "mostly a voluptuously drawn Cleopatra and a bevy of cuties that trot around bare-breasted", but praised the "lavish backgrounds" and some of the imagery and color.

Variety called the film "partly sophomoric", with "emphasis on vulgar low comedy", but praised it for having good animation and color.