Sarah's refuge is set to be attacked in the season premiere of "Orphan Black" season 4. Also, the series is revealed to set up a new path to a basic storyline.

According to a synopsis in Ecumenical News, "Orphan Black" season 4 episode 1, entitled "The Collapse of Nature," is set to see the destruction of Sarah's refuge. As per the publication, the said refuge is located in Iceland and it will be destroyed by a Neolution attack.

Following the attack to her refuge, fans are set to see Sarah find another place to live once more. With the flow of events, the character will be led to a thought that she will be hunted down by the said forces no matter how far she and her family go and hide from them.

In the promo trailer for "Orphan Black" season 4 premiere episode, it is seen that Project Leda clone M.K. is running in the forest while wearing a sheep mask. Then, she makes contact with two men who are burying someone, or something, which causes her to flee. The clip also revealed that Beth already knows M.K. and they are in the same alliance, working hand in hand about something pertinent to the cloning project.

According to AV Club, "Orphan Black" season 4 is set to iron the folds from its past with a pointed path. As per the publication, the series will go back to the basics, which specify on lead characters and "streamlined" storylines that are evidenced in the first episode. It is also set to coincide with story arcs involving potential new sets of villains and adversaries.

"Orphan Black" season 4 episode 1 is set to air on Apr. 14. Watch the promo trailer here.