Ep 1. Borders

In the season 3 premiere of Siren, titled "Borders," the residents of Bristol Cove are dealing with the aftermath of the oil rig explosion that ended the previous season. The explosion has caused significant damage to the town, and tensions are running high as everyone tries to figure out how to move forward.

Meanwhile, the mermaid Ryn is dealing with her own set of challenges. She still hasn't fully recovered from the injuries she sustained in the final battle of season 2, and is struggling to find her place in a world where she is an outsider. She spends much of the episode trying to figure out how to navigate the human world, and how to reconcile her dual identities as both a mermaid and a human.

As Ryn navigates her own challenges, the rest of the town is wrestling with its own issues. The local government is struggling to keep up with the demands of the disaster recovery effort, and tensions are rising between the locals and the oil company responsible for the explosion. At the same time, a group of new mermaids arrive on the scene, leading to a tense standoff between the mermaids and the humans.

Throughout the episode, we see the various characters attempting to find common ground in the midst of all this chaos. Some, like Ryn and her ally Ben, are trying to find a way to bridge the gap between the two worlds. Others, like Maddie and her father, are struggling to balance their loyalty to their mermaid friends with their obligation to the town.

As the episode draws to a close, it becomes clear that the tensions between the humans and the mermaids are only going to escalate. With both sides feeling out of control and threatened, it seems that a major conflict is imminent. The episode ends on a cliffhanger, leaving viewers on the edge of their seats and eager to see what happens next.

Overall, "Borders" is a tense, action-packed episode that sets the stage for an exciting season ahead. With its compelling characters, high-stakes conflict, and supernatural elements, Siren continues to be a must-watch show for fans of science fiction and fantasy.