The Big Sex Talk challenges Canadians' ideas about gender and sexuality, explains new vernacular, and debunks all the myths surrounding sex.

Hikari Kojima is selected to be a photographer for a gravure magazine. On the morning of the day of the competition, the rain aggravates her PMS symptoms and her body does not listen to her at all! Similarly, Aoi Serizawa, who was supposed to show off her first swimsuit photo at the beginning of the magazine as a step towards her dream of becoming an actress, suddenly gets her period and panics.

Renowned human behaviourist Desmond Morris turns his highly trained zoological eye on the differences in men and women, comparing different aspects of male and female biology and behaviour. He introduces us to the differences in the body and the brain, sex-specific rituals, sex and parenting roles and the status of the sexes in different societies around the globe.