Siren is a dark and emotionally intense supernatural drama that reimagines the classic mermaid myth through a modern, thrilling, and often haunting lens. Set in the fictional fishing town of Bristol Cove, Washington, long rumored to be home to mermaids, the show begins with the sudden appearance of a mysterious woman named Ryn, whose arrival coincides with increasing marine disturbances and strange disappearances. Beautiful but feral, Ryn quickly becomes the focus of suspicion, fear, and scientific curiosity — especially when it’s revealed that she’s not human, but a powerful mermaid with a mission: to find her captured sister, who is being held by military scientists for secret research.
Ryn's presence forces the townspeople to confront long-buried truths about their coastal legends and their own role in an ecological and ethical crisis. She forms an unlikely bond with two marine biologists, Ben Pownall and Maddie Bishop, who are at first skeptical of her origins but quickly become her protectors and closest human allies. As they help Ryn navigate the confusing and sometimes hostile human world, a deep emotional connection forms between the three — one that evolves into a complex and unconventional love triangle that challenges boundaries of identity, loyalty, and even species. This relationship becomes the emotional center of the show, blurring the lines between romantic connection and mutual survival.
As the series progresses, Siren dives deeper into mermaid mythology, introducing other merfolk who have been driven to land due to environmental destruction, rising ocean temperatures, and increasing human interference. These new arrivals — some peaceful, others more aggressive — bring conflict, raising the stakes and forcing both Ryn and the humans to choose between war and coexistence. Tribal tensions within the mermaid population itself mirror human politics, revealing a world beneath the sea that is just as divided, wounded, and layered as the one above. Themes of environmental collapse, military exploitation, and the commodification of nature run strongly through the narrative.
What makes Siren truly unique is its portrayal of mermaids as apex predators, not romanticized sea creatures. Ryn is not only mesmerizing and intuitive, but also lethal when provoked. Her struggle to control her instincts — especially when threatened — creates moments of deep internal conflict. As she becomes more human in understanding, she also exposes the moral flaws of humanity, questioning what it really means to be “civilized.” In contrast, characters like Ben slowly unravel as they’re pulled deeper into the mysteries of the ocean and begin to lose themselves in the call of the sea. Maddie’s journey explores themes of love, identity, and personal strength, especially as the relationship between the trio deepens and strains.
By its conclusion, Siren delivers more than just mermaid lore — it becomes a poignant exploration of trust, survival, and what happens when two worlds that were never meant to collide begin to merge. With striking underwater cinematography, emotionally complex characters, and an atmosphere that blends eerie tension with moments of unexpected beauty, the show offers a refreshing take on the fantasy genre. It asks powerful questions: Can instinct and empathy coexist? What price are we willing to pay for progress? And can love truly exist where species, cultures, and biology are at odds? Siren may have ended in 2020, but its message — about protecting what’s wild and understanding what’s different — lingers far beyond its final wave.