Do you ever wonder how your friends really see you? What would life be like if they weren't around? Parents, partners, children all come and go, but our friends stay - witnesses, cheerleaders, therapists, playmates. Each friendship is unique. But what makes it work? Two friends answer 17 questions about each other - on their own and without conferring. Each episode is a combination of those answers, flipping open the blueprint of one of the world's most valuable things - a friendship.