The night Ixchel's face went dark and the moon disappeared from the sky, a girl named Zac stood at the roots of the great ceiba tree and made a decision that would change everything. This is the kind of bedtime story that gets into your bones — the kind with real danger and a girl who has to choose who she wants to be.

Zac was brave. Everyone in her village near the limestone hills said so. She was also stubborn, quick-tempered, and absolutely certain she was always right. Usually, that was fine. Tonight, it wasn't fine. Tonight, her little brother Bol was sick — burning hot, shaking, his eyes rolling back like he was watching something terrible only he could see.

The village healer, old Ixmucané, pressed her dry fingers to Bol's forehead and shook her head slowly.

"The Lords of Xibalba have reached up and taken his breath," she said. "Only the Sacred Jade Flower, which blooms in the lowest dark of the underworld, can call it back."

Zac grabbed her jade bead necklace and squeezed it hard. "Then I'll go get it."

Ixmucané looked at her with eyes like deep wells. "The Hero Twins themselves barely escaped Xibalba. You are not the Hero Twins."

"I know," said Zac. "But Bol is my brother."

—

The entrance to Xibalba was right there — at the roots of the great ceiba tree, the world tree, whose roots reached past the living world and down into the dark below. Zac climbed down through the roots. The air turned cold and wet, smelling like old smoke and stone that had never once seen sunlight. She could hear whispering — not words, just sound, sliding around her like cold water.

The first thing she met was a wooden statue dressed as a lord, seated on a carved throne with a smug painted grin.

Zac almost bowed. Then she caught herself. She'd heard every story Ixmucané ever told. The Dark Lords' favorite trick was putting fake lords first, so visitors wasted their respect on wood and paint.

She walked right past it.

"Smart girl," said a real voice from the shadows.

A figure stepped forward — tall, wearing a headdress of owl feathers, his face painted half black, half white. Ah Puch, Lord of Death himself. His breath smelled like cold copal ash. Behind him, nine other Dark Lords stood grinning, their teeth too white, their eyes too bright.

"We have been waiting," Ah Puch said pleasantly, "for someone like you. Three tests. Pass them, and we give you the Jade Flower. Fail —" He shrugged. "You stay here forever."

Zac's legs wanted to run. Her stomach felt like it had dropped all the way to the floor. But she stood straight.

"Fine," she said. "What's the first test?"

—

The first test was the Dark House — a room with no light at all. The Lords handed her a burning torch and a lit cigar, and told her to cross and come out with both still burning. This was one of the tricks Ixmucané had described — the kind told to kids ages 6-12 on warm evenings around the fire, the kind that always makes everyone lean in.

Zac caught a firefly from the shadows and pressed it to the tip of the torch, so it glowed without burning down. She put a small ember at the tip of the cigar instead of fire.

She walked out the other side. Both were "burning." The Lords were not happy.

"Second test," Ah Puch said, his smile thinner now. "The Cold House. Cross it."

The Cold House was cold so deep it felt like being swallowed by a river in winter. Zac's fingers went numb instantly. Her teeth chattered so hard she couldn't think straight.

She remembered Bol's face. The way he laughed when she made funny faces. The way he always saved her the biggest piece of squash at dinner, even when he was hungry himself.

She moved. Fast — swinging her arms, stomping her feet, making her own heat — until she burst through the far door, gasping.

—

"Third test," said Ah Puch, and now he wasn't smiling at all. "The Razor House. Filled with blades that move on their own. No trick will save you there."

Zac stepped in. The blades were everywhere — spinning, slicing the air with a sound like a hundred angry bees. The smell of cold iron filled her nose. She could feel the wind from the nearest blade against her cheek, sharp as a warning.

She stood very still and thought.

Not about tricks. Not about being brave.

She thought about the bats — servants of Xibalba, yes, but also prisoners here in the Razor House, unable to rest, unable to fly free, trapped by the same spinning blades that threatened her.

She spoke quietly into the dark.

"I know you're trapped here too," she said. "I'm sorry. If I get out of this, I'll leave copal burning at the ceiba tree every year. For you. I promise."

Silence.

Then — the blades slowed.

One by one, a thousand tiny wings brushed past her face, soft as fingers, as the bats rose from the shadows and landed on every blade, holding them perfectly still.

She walked through without a scratch.

—

Ah Puch stood at the other end. In his palm sat the Jade Flower — small, glowing faint green, smelling of rain and new corn. His wide grin was completely gone.

"How?" he demanded.

Zac looked at him steadily. "They were trapped too," she said. "I just asked nicely."

He dropped the flower into her hand.

—

She climbed back up through the roots of the ceiba tree. The air turned warm again, smelling of wood smoke and tortillas and the pine trees outside the village. Above her, Ixchel's moon was coming back — growing brighter and brighter, like someone slowly turning up a lamp.

She ran home. She pressed the Jade Flower to Bol's lips.

He opened his eyes.

"Zac," he said, "I'm hungry."

She laughed so hard she cried, right there on the dirt floor of their home, while the village dogs barked at the returning moon and silver light poured through the doorway.

And every year after that, at the roots of the great ceiba tree, there was always a stick of copal burning quietly in the night.