1973, six femmes et cinq hommes sillonnent l’océan Atlantique pendant 101 jours. Ils sont les cobayes d’un projet inédit visant à étudier les origines de la violence et de l’attraction sexuelle. 45 ans après, les survivants reviennent sur cette aventure hors du commun.

In 1973, five men and six women drifted across the Atlantic on a raft as part of a scientific experiment studying the sociology of violence, aggression and sexual attraction in human behavior. Although the project became known in the press as "The Sex Raft", nobody expected what ultimately took place on that three month journey. Through extraordinary archive material and a reunion of the surviving members of the expedition on a full scale replica of the raft, this film tells the hidden story behind what has been described as "one of the strangest group experiments of all time".