In 'Echoes of the Abyss,' you take on the role of Dr. Talia Voss, a marine geologist and part-time conspiracy theorist, who discovers strange geological signals in the Gulf of the Farallones. As you navigate through the intricacies of sonar scans, ecological data, and government cover-ups, you unravel a web of secrets tied to toxic waste disposal and hidden treasures of the ocean. Engage with local activists, scientists, and even shadowy figures from the past to piece together the truth while making choices that impact the delicate marine ecosystem.