This episode seeks to understand what is going on in our minds and bodies on the road to losing our virginity and to find out just what happens when we fall in love.

Falling in love and having sex for the first time are milestones which people never forget. The first episode of this three-part series accompanies young adults as they navigate this sexual territory for the first time and uncovers what is going on in our minds and bodies on the road to losing our virginity. Using CGI and computer graphics to travel inside the human body, the programme explores the physiological, neurological and psychological changes that happen before, during and after sex.

It tracks one couple's ride from initial feelings to full-blown love, but it is a guessing game all the way - so is sex on the cards? The science behind their attraction is uncovered. For others with love in the bag, a wedding is the chance to confirm their beliefs and open the doors to a new level of intimacy, but will giving each other their virginity deepen their love even further?

Sexual adventures are as much about finding your identity as they are about having fun, and for one gay man he has it all to do. The excitement of his first gay pride helps reaffirm his desires, but how will he cope when coming out to his family for the first time?

Many people regret decisions made in the heat of the moment - we hear how abortion became one girl's only option, and for another there is exclusive access into a new surgical procedure which allows her to become a virgin again.

The pressure to 'get it right' is always there, and for one group of lads a booze-fuelled holiday is the way to go. The effect of alcohol is explored, including the science behind 'beer goggles' - but will it end in sex on the beach?