Transgender demigod Teo is unexpectedly selected for the Sunbearer Trials, a fierce competition among demigod heroes where the winner sacrifices the loser to Sol, their blood fueling the Sun Stones that protect Reino del Sol. "Only the most powerful and honorable semidioses get chosen. I'm just a Jade. I'm not a real hero." As each new decade begins, the Sun's power must be replenished so that Sol can keep traveling along the sky and keep the evil Obsidian gods at bay. Ten semidioses between the ages of thirteen and eighteen are selected by Sol himself as the most worthy to compete in The Sunbearer Trials. The winner carries light and life to all the temples of Reino del Sol, but the loser has the greatest honor of all they will be sacrificed to Sol, their body used to fuel the Sun Stones that will protect the people of Reino del Sol for the next ten years. Teo, a 17-year-old Jade semidiós and the trans son of Quetzal, goddess of birds, has never worried about the Trials...or rather, he's only worried for others. His best friend Niya daughter of Tierra, the god of earth is one of the strongest heroes of their generation and is much too likely to be chosen this year. He also can't help but worry (reluctantly, and under protest) for Aurelio, a powerful Gold semidiós and Teo's friend-turned-rival who is a shoo-in for the Trials. Teo wouldn't mind taking Aurelio down a notch or two, but a one-in-ten chance of death is a bit too close for Teo's taste. But then, for the first time in over a century, Sol chooses a semidiós who isn't a Gold. In fact, he chooses two: Xio, the 13-year-old child of Mala Suerte, god of bad luck, and...Teo. Now they must compete in five mysterious trials, against opponents who are both more powerful and better trained, for fame, glory, and their own survival.

"Welcome to The Sunbearer Trials, where teen semidioses compete in a series of challenges with the highest of stakes, in this electric new Mexican-inspired fantasy from Aiden Thomas, the New York Times bestselling author of Cemetery Boys. 'Only the most powerful and honorable semidioses get chosen. I'm just a Jade. I'm not a real hero.' As each new decade begins, the Sun's power must be replenished so that Sol can keep traveling along the sky and keep the chaotic Obsidian gods at bay. Sol selects ten of the most worthy semidioses to compete in the Sunbearer Trials. The winner carries light and life to all the temples of Reino del Sol, but the loser has the greatest honor of all -- they will be sacrificed to Sol, their body melted down to refuel the Sun Stones, protecting the world for another ten years. Teo, a seventeen-year-old Jade semidiós and the trans son of the goddess of birds, isn't worried about the Trials . . . at least, not for himself. His best friend, Niya is a Gold semidiós and a shoo-in for the Trials, and while he trusts her abilities, the odds of becoming the sacrifice is one-in-ten. But then, for the first time in over a century, the impossible happens. Sol chooses not one, but two Jade competitors. Teo, and Xio, the thirteen-year-old child of the god of bad luck. Now they must compete in five trials against Gold opponents who are more powerful and better trained. Worst of all, Teo's annoyingly handsome ex-best friend and famous semidiós Hero, Aurelio is favored to win. Teo is determined to get himself and his friends through the trials unscathed -- for fame, glory, and their own survival." -- From publisher's website.