Porn is everywhere. But Cara discovers it isn't all bad. In Spain, she helps make an ethical, feminist porn film. She explores positive role models in gay porn in Germany, boy-on-boy love comics for women in Japan and sensitive, homemade porn in New York.

The idea of gender is becoming more talked about. But what is it, and why does it matter? Cara explores drag with a trans man in LA, discovers a third gender culture in Mexico and experiences a ‘gender swap' in Spain. Along the way, she confronts her own gender fluidity and masculinity.

Love has always fascinated Cara. It's time to think beyond monogamy. Cara takes a DNA test in London and has a brain scan in the USA to reveal the secret science of love. She also explores solo weddings in Japan, polyamory in South Africa and non-monogamy in LA.