Welcome to Tiankawi—shining pearl of human civilization and a safe haven for those fleeing civil unrest. Or at least, that’s how it first appears. But in the semi-flooded city, humans are, quite literally, on top: peering down from skyscrapers and aerial walkways on the fathomfolk—sirens, seawitches, kelpies and kappas—who live in the polluted waters below. And the fathomfolk are tired of it. When a water-dragon and a half siren join forces, the path to equality is filled with violence, secrets, and political intrigue.

Clio isn't a thief. She isn't a spy, a soldier, or a diplomat. Aside from her rare ability to mimic spells, her only notable talent is gardening. But with a war threatening her homeland, and her half-brother—the nymph prince—pleading for her help, she agrees to attempt the impossible: stealing deadly magic from the best spell weavers in the three realms. Their stronghold is located deep in the Underworld, which is exactly the sort of place an Overworld nymph like her should never go. Getting in won't be that hard. Getting out alive is the impossible part.

Her hit band Twice Struck topped the country music charts for almost a decade until her high-profile marriage to her bandmate and co-writer publicly exploded. Now she's fading from the spotlight and her own life, just trying to keep her head above water.

Veteran firefighter Lieutenant Hallie Hunter has fought hard to win her place in the male dominated world of firefighting. In Hallie's quest for promotion to Captain, she is tasked with training the new recruits. Kaia Montgomery is a young and spirited new recruit whose teamwork skills are lacking and Hallie's attraction to her is immediate and consuming. Hallie knows she must shut down her attraction to Kaia. Hallie is her boss and Hallie is determined to get promoted to Captain this year.

Each year at the Tournament of Gold, first-blooded and firstborn male warriors battle alongside their massive, otherworldly monsters for fame and power. But when Talia's beloved younger brother is murdered on his way to the tournament—and his beast unexpectedly bonds with Talia—all hope for the Tenth is lost. The powerful, arrogant, and dangerously seductive Fortiss of the First House would never let a woman vie for a seat on the Court of Talons. Desperate for answers and to protect her house, Talia assumes her brother's identity and enters the tournament.