The chamber opened around them like the inside of a living lung.
The air was wet and warm. Light pulsed softly through vast braided roots that arched overhead, disappearing into darkness. At the center of the chamber rose a structure like a flower carved from light itself. Its petals were half-closed, their glow dim and uneven. With every slow pulse, the light faltered, as if the flower were struggling to remember how to breathe.
Claire felt the weakness of it in her chest. Each flicker made her own heartbeat stutter.
“It’s dying,” she whispered.
Joanne did not answer right away. She stepped forward with the quiet certainty of someone approaching a long-awaited destination. Her brother caught her wrist.
“There is still time to turn back,” he said, his voice raw. “We can look for another way.”
Joanne smiled at him, gentle and unbearably sad. “We already did,” she said. “This is the way that’s left.”
She turned to Claire.
Up close, Joanne looked smaller. The sharp edges Claire had always seen in her were softened by exhaustion and something like relief.
“I broke it,” Joanne said simply. “I tried to command what should have been loved. I thought I could force the world into safety. I was wrong. And I have been wrong for a very long time.”
Claire shook her head. “There has to be another way,” she said. The words came out thin and desperate. “You don’t have to—”
“Yes,” Joanne said. Not unkindly. “I do.”
The dying flower pulsed again. The light dimmed further. The roots around them creaked, a low sound of strain that echoed through the chamber. Claire felt a wave of fear roll through her. If the light went out completely, she knew with a certainty that chilled her that the world above would follow.
Joanne stepped to the edge of the flowering core. Its dim glow painted her hands in pale gold.
“I cannot do this alone,” she said quietly.
Claire stared at her. “What?”
“You must help me open it,” Joanne said. “It will not accept me without a witness. Without someone who understands what is being given.”
Claire’s stomach twisted. She looked at the flower, at Joanne’s outstretched hands. The path home felt impossibly far away.
“I don’t want to,” she said. The confession tore out of her. “I don’t want you to die. Why should we save them? They argue and they waste and they break things. Why is it always someone like you who has to pay for it?”
The chamber answered with silence. The flower’s light guttered, almost going dark.
Then the roots around Claire stirred.
Images flickered in the dim glow, not in the air but inside her mind. She saw her mother laughing at the stove, flour dusting her cheeks. Her father collapsing to the floor in mock agony, a wooden spoon clutched to his chest while Arthur shrieked with laughter. She saw Tilia bent tenderly over a fragile stem. She saw strangers sharing bread in the town square. A thousand small kindnesses, bright as sparks.
Love. Messy and imperfect and stubborn.
The flower pulsed faintly in time with those memories. Claire understood then that the Engine was not showing her grand triumphs or heroic legends. It was showing her the fragile threads that stitched ordinary lives together.
Without that, there was nothing.
Her hands were shaking when she stepped beside Joanne.
“I’m afraid,” Claire whispered.
“So am I,” Joanne said. She reached out and squeezed Claire’s fingers. “That means you understand what this costs. That is enough.”
Together, they placed their hands into the heart of the flower.
Light surged up Claire’s arms, hot and cold at the same time. She felt the vastness of the Engine open around her: rivers threading through stone, roots drinking deep in distant forests, clouds gathering over dry fields. She felt Joanne beside her, a steady presence dissolving into the current.
Forgive me, Joanne’s voice seemed to say, though her lips did not move.
Claire held on tighter.
“I forgive you,” she said aloud, and felt the words settle into the light like seeds.
Joanne smiled. It was a small, peaceful smile. Then her fingers loosened in Claire’s grasp. Her form unraveled into threads of gold that streamed into the flowering core. The petals flared wide, brilliant and blinding.
The chamber filled with a sound like a great breath drawn after a long drowning.
Far above, water rushed.
Claire staggered back as the light gentled. The flower now blazed with steady radiance. The roots around the chamber thrummed with renewed strength. Through the Engine she felt the river swell and surge back into its ancient bed. She felt rain gathering, heavy with promise. In distant places, buried seeds stirred. And beneath it all, she felt Joanne. Tears blurred Claire’s vision. She pressed her hand to her chest and bowed her head.
“Thank you,” she whispered.
When she finally turned toward the stair, the others were watching her with awe and grief etched into their faces. Claire took a steadying breath.
“We have to go,” she said softly. “The world is waking up.”
They climbed toward the surface. Taking a new path, higher. With each step, the air grew fresher and cooler. When Claire emerged into the open, dawn was breaking.
The river roared beside them, full and shining. Its waters leapt over the banks in joyful excess. The cracked earth was already darkening, drinking deeply. Along the shore, green shoots pushed through the soil with impossible speed.
People were gathering, crying and laughing as the water returned. Some fell to their knees. Others embraced. Above them, clouds rolled in thick and silver, and the first drops of rain began to fall.
Claire stood at the river’s edge and let the rain soak her hair and clothes. Her tears of joy mixed with the rain from above. Grief and wonder tangled inside her, too vast to separate. The world felt unbearably alive.
In the rush of the river and the whisper of the rain, she felt a familiar warmth, steady and gentle.
She was not alone.
Claire closed her eyes and breathed in the scent of wet earth and growing things. When she opened them again, the town was already changing around her, washed clean and trembling with new life.
She stepped forward into it, carrying the memory of Joanne’s sacrifice like a quiet flame, and began the long work of belonging to the world she had helped save.