He moved his family into an abandoned oven, where the brick walls radiated heat for days. No one in the village understood why Tomás had made that decision, but his gaze held a mixture of urgency and certainty that left no room for questions.

The oven stood on the outskirts, beyond the parched fields where the wind carried dust like ancient whispers. It had belonged to a bakery that closed decades ago, when the new highway diverted trade and left the village to slowly fade into oblivion. The building, with its blackened bricks and broken windows, seemed more like a wound in the landscape than a refuge. Yet for Tomás, it represented his only chance of survival.

It all began with the coldest winter anyone could remember. It wasn’t an ordinary cold, the kind that seeps through cracks and forces you to light the fireplace. It was a cold that seemed to emanate from deep within the earth, as if the ground itself had turned hostile. The animals began to die first. Then the crops withered, covered in a persistent frost that wouldn’t melt even at midday.

The entire village tried to resist. They sealed doors, stockpiled firewood, and shared food. But the cold persisted. Each night was worse than the last, and people’s breath became a thick fog even inside their homes.

Tomás, who had always been a quiet but observant man, began to notice something strange. One afternoon, while searching for firewood on the outskirts of town, he passed near the abandoned kiln. He expected to find it as cold as everything else, but when he touched one of its walls, he felt something different: a slight warmth, almost imperceptible, but real.

At first, she thought it was her imagination. But she returned the next day, and the next. Each time, the heat was more noticeable. It wasn’t intense, but it was constant. As if the oven, forgotten by everyone, still held within its depths the fire of bygone days.

That night, while his wife Clara was trying to get the children to sleep under several blankets, Tomás spoke.

“We have to go,” he said quietly.

Clara looked at him, exhausted. “Leave? Where to?”

—To the old oven.

There was a long, heavy silence.

“Are you crazy?” she whispered. “That place is falling apart.”

“No,” he replied. “That place is alive.”

Clara didn’t understand, but there was something in Tomás’s eyes that unsettled her more than the cold. It was determination. And fear.

At dawn, while most of the town remained in their homes, Tomás loaded their meager possessions into an old cart. Clara wrapped the children—Mateo and Lucía—in whatever she could find. Without goodbyes, without explanations, they left their home.

The walk to the oven was silent. The wind blew hard, raising swirls of icy dust. The children didn’t ask questions; the cold had extinguished their curiosity.

When they arrived, Clara felt a chill that wasn’t from the weather. The place was more somber than she remembered. The walls were stained, the ceiling partially collapsed, and the large oven in the center looked like a dark, gaping mouth.

“We can’t stay here,” he said.

But Tomás was already inside, touching the bricks.

—Come on —he insisted.

Clara hesitated, but as she crossed the threshold she felt it: the air was different. Not warm, but less cruel. She approached the oven and placed her hand against the wall. Then she understood.

“It’s… lukewarm,” he murmured.

Thomas nodded.

That night they slept for the first time without the cold seeping into their bones. It wasn’t comfort, but it was survival.

The following days brought strange changes. The heat inside the kiln began to slowly increase. It wasn’t coming from any visible fire. It was as if the bricks, one by one, were waking from a deep sleep.

Matthew was the first to notice it.

“Dad, the walls breathe,” he said.

Tomás did not correct him.

Clara, on the other hand, began to worry. There was something unnatural about it all. Heat shouldn’t come from nowhere. It shouldn’t grow without a source.

“What if this isn’t good?” he asked one night.

“It’s all we have,” replied Thomas.

But even he was beginning to doubt.

One afternoon, while exploring the inside of the oven, he discovered an old hatch in the floor, hidden under rubble. With effort, he managed to open it. Hot, almost suffocating air poured out from below.

There was a staircase.

Tomás hesitated before going down. But something—curiosity, need, or perhaps something deeper—compelled him to descend.

The basement was large and dark, but it wasn’t empty. In the center, surrounded by older bricks, was a circular structure, like an even older oven. And inside it… something was glowing.

It wasn’t fire. Not exactly.

It was a pulsating, reddish light, like a beating heart.

Thomas stepped back.

“What is this…?” he whispered.

The light seemed to intensify.

That night he didn’t tell Clara anything. But the heat in the building increased noticeably. So much so that they had to remove some layers of clothing. For the first time in weeks, the children smiled.

Days later, the heat was undeniable. The walls radiated a constant energy. Outside, the world remained frozen. But inside the oven, life was beginning to return.

Others in the village began to notice the family’s absence. Some even saw a faint plume of steam rising from the old bakery.

Curiosity led them there.

When they arrived, they found something impossible: heat.

“How…?” one of them asked.

Tomás hesitated to answer. But he couldn’t deny the obvious.

Soon, more people began to arrive. The abandoned oven became a shelter.

But with each new inhabitant, the heat grew… and so did Tomás’s unease.

One night, the basement light pulsed more brightly than ever. He went downstairs again.

This time, he wasn’t alone.

Clara had followed him.

“I knew you were hiding something,” he said.

They both looked at the shiny structure.

“This isn’t normal,” she whispered. “It can’t be.”

The light seemed to react to their voices.

And then, they heard something.

A low, deep sound.

Like a heartbeat.

The ground vibrated slightly.

Clara grabbed Tomás’s hand.

—We have to go.

But he didn’t move.

“And the people?” he asked.

Up above, the voices of the others echoed, oblivious to the danger.

The oven, now full of life, depended on that which beat underground.

And that heartbeat… was growing.

The walls radiated heat for days.

But they also began to crack.

And in each crack, a reddish light filtered through.

As if something were finally trying to get out.