The fifth and final season brings Sarah and the sestras to their darkest days in an effort to finally cut off the head of the snake and win their freedom. Throughout the season, the sisters individually delve into their past to confront personal struggles and emerge stronger through these self-explorations. Despite the great risk to attain freedom for themselves, their families, and the host of clone sisters they've yet to meet, clone club uncovers the missing pieces of the insidious conspiracy to finally learn the story behind their origin.