Fans of BBC series 'Orphan Black', will be excited to learn that the show has been renewed for a third season, and beyond that, the network has released the official synopsis for the upcoming installment.

A press release issued by BBC America regarding Season 3 reads, "Season 3 plunges the clone sisterhood into unexpected territory with the realization that they're not alone. Just when they thought they knew their enemies and allies, season three reveals our clones are more vulnerable than ever before. Highly trained, identical male-soldiers raise more questions than answers."

The press release further states "Who are these new clones? Who created them? And more importantly, why do they exist? Sarah, Cosima, Alison and Helena are stronger together than they are apart, but this season will put that bond to the test. Will they forge towards their truth, or fall at the feet of those that seek to control them?"

From what we can gather from the above synopsis, it appears that the relationship between the clone sisters, Sarah, Cosima, Alison and Helena, is likely to be tested in the upcoming series. Moreover, the four sisters will keep looking for the answers to their queries, as well as looking to discover the actual reason for their existence while getting into the dangers of a different clone project.

Project Castor, which has been introduced into the show recently, will be the new project and be a much more militarized project compared to Project Leda. Now, the major question is which person is going to run these two projects?

There is a possibility that the female clones will break into the premises of the male clones with a view to save Helena. In addition, it is likely that Sarah will ask Mark for help. On that note, 'Orphan Black' Season 3 will also reveal Mark's secrets.

In 'Orphan Black' Season 3, viewers will see Tatiana Maslany, Ari Millen, Jordan Gavaris, Dylan Bruce, Maria Doyle Kennedy, Evelyne Brochu, Kevin Hanchard, Michiel Huisman and Zoé De Grand Maison returning to reprise their characters.

According to BBC, the filming of the episodes for 'Orphan Black' Season 3 has already begun and the series will be aired in Spring 2015.