In the vibrant, sun-drenched Kingdom of Anthodia, the seasons are measured by the bloom of the Great Marigold and the whims of its ruler, King Oberon. Known as "The Thorny King," Oberon is as beautiful as he is bitter, having spent centuries rejecting every high-born flower fairy in the realm for failing to meet his impossible standards of perfection. He wants a Queen who radiates power and color—someone who can withstand the scorching midday sun of his court. The court is scandalized when an invitation is extended to the House of Saturniidae, the elusive moth royalty of the dark, silent woods. Enter Princess Elara Lunaire, a creature of silver dust, translucent lace, and midnight fur. To Oberon, she is a "drab little weed" who looks like she might dissolve in the light of his throne room. To Elara, Oberon is a loud, arrogant bloom who has forgotten that the most resilient things grow in the shadows. Though he greets her with his signature sting, Oberon finds himself unable to dismiss the quiet girl who refuses to flinch at his thorns. In a kingdom where everything is bright, fast, and fleeting, the King is about to learn that the softest wings often carry the heaviest hearts—and that some beauties can only be seen when the sun goes down.