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.

Cara consults a cosmetic surgeon and investigates where our ideas about beauty come from. She explores colourism in South Africa, plastic surgery in Colombia and talks body positivity everywhere.