Mariella, like her father before her, is an astrologer. Before she can inherit his fortune, she must fulfil the terms of his will. He wants her to write an explicitly sexual, accurate account of the male sexual habits of the twelve star signs. Naughty Mariella's aroused by the challenge, but she has her work cut out: she has only one year to complete the book and must have a full-on sex session with a man of each sign in order to fulfil the obligation.
From hot-headed Aries, who's up for it anytime, anywhere, through to languid Pisces, who likes to take his own sweet time, Mariella sets about researching her zodiac lovers' technique with much enthusiasm. Which sign will she rate highest?