Strange things are happening in Lily Ivory's San Francisco. First, she finds a vintage mermaid costume which dates from the 1939 San Francisco's Treasure Island World's Fair - and which gives off distinctly peculiar vibrations. Next, she stumbles upon a dead man in the office of her predecessor, and as the community's new leader, she feels compelled to track down the culprit. Just when Lily thinks things can't get any stranger, a man appears claiming to be her half-brother, spouting ideas about the mystical prophecy involving San Francisco and their family...