Outlander: Blood of My Blood season 1 recounts two parallel tales of Claire and Jamie's parents. Being a prequel to the original Outlander series, the historical drama brings new characters whose relationships had a lasting impact on Jamie Fraser and Claire Randall's lives.This series opens up the Outlander universe, going in-depth into aspects of clan rivalries, societal pressures, and time travel. While the original series is based on Diana Gabaldon's fantasy novel series, Outlander: Blood of My Blood season 1 is not adapted from any published work.What is Outlander: Blood of My Blood season 1 based on? View this post on Instagram Instagram PostOutlander: Blood of My Blood season 1 is not a direct adaptation of any of Diana Gabaldon's published novels, although it is heavily rooted in her existing universe. The prequel series explores the lives of characters introduced initially in Gabaldon's Outlander books, like Jamie Fraser's parents, Brian Fraser and Ellen MacKenzie, and Claire Randall's parents, Henry Beauchamp and Julia Moriston.Though Brian and Ellen's relationship has been a part of Outlander's history for a long time, Claire's parents only had very brief mentions in the books since she was brought up by her Uncle Lamb due to their early deaths. The series takes a creative detour by theorizing that Claire's parents did not perish in a car crash, but rather went back through the Stones, bridging their history with Jamie's bloodline.This new twist was developed by veteran Outlander showrunner Matthew B. Roberts, not Gabaldon. Notably, Gabaldon is working on her prequel book involving Jamie's parents, currently titled A Bird in the Hand. However, she has specified that her novel will not include Claire's parents, who existed in a separate time."I am currently writing this new novel along with A BLESSING FOR A WARRIOR GOING OUT, Book Ten of my Outlander series of novels. No publication date has yet been announced for either one," she stated.Outlander: Blood of My Blood season 1: What has happened so farA still from the show (Image via Starz)Outlander: Blood of My Blood season 1 features two concurrent love affairs spread over different centuries, linking the beginnings of Jamie and Claire. In 18th century Scotland, Ellen MacKenzie battles family politics after her father, Red Jacob's death.With the leadership of Clan MacKenzie in question, her brothers Colum and Dougal promote alliances that undermine Ellen's independence, marrying her off to Malcolm Grant to ensure clan stability. But Ellen forms an illicit attachment with Brian Fraser, the illegitimate son of Lord Simon Fraser, which causes tension between obligation and passion.Trying to broker peace among her brothers instead stops an outsider from taking over the lairdship, but she is still caught up in political intrigue and inner turmoil. Meanwhile, in the early 20th century, Julia and Henry Beauchamp (Claire's parents) were introduced through their wartime affair. A Scottish car accident takes them to Craigh na Dun, where they are taken back in time to 1714 in separate ways.Julia is made a servant for Castle Leathers under the care of Simon Fraser, and Henry, being adopted by the Grants, becomes their bladier. They are separated but refuse to give up on each other. Both fight for survival and control in the Highlands. By episode 3, Julia is presented with a hidden pregnancy and concocts a risky scheme, and Henry is still searching for her amid clan conflicts.Outlander: Blood of My Blood season 1 is available to stream on Starz.