Hopefully, I'm not boring you to death yet. Here we go.

Steve's heart pounded violently in his chest, his mind racing with every second that passed. In the darkness of the cave, he fumbled desperately for the guide rope, his fingers scrabbling against the rough rocky walls. He held onto Danny with one hand, knowing that without the rope, they would never make it back to the exit in time.

Panic tugged at the edges of his mind, threatening to overtake him. He forced himself to take a deep, steadying breath, trying to focus on the task at hand. He couldn't afford to panic. It wouldn't help. Down here, it wasn't just a hindrance, it was a death sentence. It simmered just beneath the surface, but Steve pushed it back, willing himself to stay calm and composed.

He glanced at Danny, whose wide eyes brimmed with fear, his breaths coming in rapid, shallow gasps. Steve signaled 'OK' to him, a gesture meant to reassure. It didn't. Danny remained unresponsive, paralyzed by panic.

Come on, Danny, stay with me.

Finding that rope was crucial. Steve had made a promise to get Danny out, and he intended to keep it, no matter the cost. He'd ensure his best friend made it out alive, even if it was the last thing he did.

But time was quickly running out.

With each passing minute, Steve noticed his own breathing becoming faster, more erratic, despite his best efforts to stay calm. Panic was slowly creeping in, and he knew he had to fight it, for both their sake.

Steve moved slowly, his fingers trailing along the cold rocks as he desperately searched for the guide rope, or the way out. The harsh texture was all he could feel. As if things weren't bad enough, the visibility worsened with each passing foot, the silt and mud swirling up from the bottom, further clouding his vision. He could barely make out Danny's silhouette and the faint beam of his flashlight now.

Then, out of nowhere, Danny's grip tightened and he pulled at Steve's hand, a sudden, panicked movement that jerked Steve off balance. It took him a second to realize what had happened. He could only hear his own breaths. The mechanical sound of Danny's regulator was gone. Which meant...

Danny was out of air.

He thrashed and kicked, his panic destroying what little visibility they had left, reducing it to zero.

Without hesitation, Steve grabbed his emergency regulator and forced it into Danny's mouth to share his air. Danny took a few rapid, desperate breaths before the realization that he could breathe again calmed him and his struggles ceased.

It's okay, buddy. Just breathe.

After ensuring Danny could breathe again, Steve fumbled for Danny's gauge, pulling it close to see the readings. He had been right–Danny's main breathing gas was at zero. It was bad, but things got even worse when he checked his own, and saw how much he'd used since the last check. No doubt this unexpected spike in his breathing was caused by stress from losing the guide rope. His air level was dangerously low, and now there were two of them breathing from it.

He willed himself to remain calm again, and squeezed Danny's hand as a small attempt at reassurance. His other hand kept searching frantically for the guide rope that was still nowhere to be found. Desperation threatened to consume him after minutes of swimming through the narrow passages with no luck.

When he checked his air again, the situation just got worse. It wouldn't last much longer with their current breathing rate. He glanced at his dive computer which showed their current depth at 270 feet. Their next stage was planned at 200 feet. Switching to another gas any deeper than that would mean oxygen toxicity, which would cause convulsions and loss of consciousness. That alone wouldn't be a huge problem at the surface with prompt medical care, but deep inside an underwater cave system, with no chance of medical help, they'd be as good as dead.

It was clear as day that with their current main gas supply, they'd never make it to 200 feet before running out completely. They would be forced to switch to their first decompression gas way deeper.

And that was only if they even found a way to get to 200 feet in the dark cave maze without the guide rope.

In a split second, Steve made a difficult decision, hoping Danny would forgive him.

He searched for the regulator on Danny's first decompression gas tank and made him switch to it, fully aware that at this depth it would likely give him the symptoms within seconds. Minutes at best. But this way, even if Danny did lose consciousness, Steve could still use his main gas to pull his friend and get them both shallower, where they could breathe the other mixture safely. He would just have to make sure Danny didn't spit the regulator out after passing out.

A desperate move, but right now, it was their only hope.

Danny didn't protest, unaware of what was about to happen. His blind trust in Steve made the decision all the harder for Steve. He kept reminding himself that he didn't have a choice. It was either doing this and taking the risk, or certain death for both.

Steve continued navigating by touch, his desperation to find the guide rope growing with each second. There was no doubt they were lost now. They had been swimming for too long without even approaching the narrow passage they had swum through on the way in, nor were they getting any shallower.

Steve felt Danny's grip weaken, a telltale sign of the oxygen toxicity affecting his best friend. Danny's movements shifted from frantic to sluggish and uncoordinated. Steve tightened his hold, pulling Danny along with renewed urgency.

Come on, where is it?

Steve patted the cold, rocky wall in front of him and found a small entry point. He quickly checked the depth–260 feet. Could this be the narrow passage he remembered? Were they finally on the right track? There was only one way to find out.

He turned Danny around and pulled him close to face him, then pointed at him and the tiny dark space.

You go first.

Danny's eyelids seemed heavy, each second awake now an obvious struggle due to breathing the wrong gas mixture at this depth. But still, he managed a weak shake of his head.

Steve nodded, mentally begging Danny to cooperate. There was no way in hell he would let Danny swim behind him without keeping eyes on him. Not now, not when he could lose consciousness at any second. If that happened without Steve's supervision…

He forced the thoughts away and maneuvered Danny into the opening despite his protests. Danny took a moment to compose himself before starting to swim, and Steve followed closely behind. Every so often, he reached out to feel for Danny's fin in front of him, making sure his friend was still moving forward. They navigated the tiny tunnel until it widened again at 230 feet.

Exactly as he remembered it from earlier.

We're going in the right direction, buddy. We can do this.

But his relief was short-lived. As soon as the cave widened, Danny stopped in his tracks, dropping his flashlight. Steve watched in horror as the beam of light disappeared below in the mud, fully aware of what that meant. Heart pounding, he rushed to Danny's side and grabbed his friend by the arm. Danny's entire body convulsed violently for a few seconds before going completely still.

Steve snatched Danny's hand and pulled him closer, making sure Danny could still breathe, even if it was the wrong gas mixture. Relief washed over him when he saw Danny's regulator still in place. He picked up Danny's light and set off again, dragging Danny's limp body through the murky water, the weight of his friend making every movement a struggle. The damn guide rope was still nowhere to be found.

Another minute of desperate searching passed. Steve drew in a breath and felt a sudden, terrifying resistance. It was like trying to suck think syrup through a straw. The next inhale was even harder, and the third delivered nothing at all. It could only mean one thing.

His main tanks were now totally empty, too.

Recognizing the unpleasant feeling, Steve already had a regulator from his first decompression gas ready in his hand. With practiced efficiency, he spat out the main one and switched to another. Yet another desperate move. But by now, he didn't have another choice.

He checked the depth–220 feet. Just 20 feet shallower and this trimix mixture would be safe to breathe.

Every second counted. His sole focus now was to ascend through the labyrinth of cave tunnels, ensuring they could both breathe safely before his nervous system succumbed to oxygen toxicity just like Danny's.

There was no rescue team waiting at the surface. No safety divers ready to come and get them if something didn't go according to the plan. Steve understood too well that if he failed to stay conscious, their chances of survival dwindled to nothing.

He didn't even want to imagine what consequences would their deaths have on Grace and Charlie. Would Scar-face let them go? Would he deem it too risky and opt to get rid of the kids, too? Steve didn't want to find out. No. They had to make it back to the surface. Failure wasn't an option.

Desperation fueled his every move as he propelled himself forward, pulling Danny's limp body along. The weight of responsibility pressed down on him like the water pressure around them. The exhaustion set in quickly, too. Dragging Danny's 150 lbs of weight with another nearly 200 lbs of tanks attached to him didn't help. The extra effort spiked his breathing rate further–a problem he couldn't afford now.

Every kick was a battle against fatigue and time, but Steve refused to relent. They had come too far to surrender now.

As Steve continued to search for the missing guide rope, his movements became increasingly frantic. With each passing moment, the realization of their lost bearings sank deeper. The urgency to navigate to shallower depths intensified, but every turn seemed to lead them further into the cave system.

They reached 208 feet when sudden dizziness swept over Steve, and he felt a tingling sensation spreading through his limbs—a sure sign of oxygen toxicity creeping in. With each kick his thoughts became more muddled, his movements more sluggish and uncoordinated. The dark world around him seemed to spin, a disorienting blur of shadows and rock formations.

No, no, no. Just a little further.

Just as despair threatened to overwhelm him, a glimmer caught his eye—a faint sparkle of light dancing above in the beam of his flashlight. It could only mean one thing—an air pocket. With renewed determination, Steve propelled himself upwards, dragging Danny alongside him. The ascent was slow and laborious, each stroke fueled by the desperate need for breathable air.

Finally, they broke through the surface, their heads poking through the water into a small air pocket. It was cramped, with just enough space for their heads to emerge, but it offered precious air, untainted by the toxic mixture in their tanks.

But by no means they could be sure that the air trapped in the air pocket was actually safe. Steve knew that the quality of air in an underwater cave system could vary significantly, and may contain contaminants, carbon dioxide, or low oxygen levels, especially if it had been trapped for some time.

Technical and cave diving protocols emphasized the use of regulators and breathing the correct gas mixtures from the tanks even in the air pockets to avoid risks. But did they have a choice? Continuing to breathe their current mixture was even worse.

Steve inflated both of their wings so they stayed on the surface without swimming, practically turning the buoyancy control devices into life jackets of sorts. He quickly looked around, pointing his flashlight to the stones around. He identified it as limestone, which was good. There was at least a chance that the air in the air pocket would be breathable.

He removed the regulator out of his mouth and gasped for breath, relief flooding through him as he fought to clear his mind and regain control.

He turned to Danny, removed his regulator too, pulled Danny's mask down onto his neck, and shook him gently to rouse him from unconsciousness. "Danny?" he tried. "Wake up, buddy."

Danny's chest rose and fell, which was the only thing keeping Steve from breaking apart, but his friend didn't respond.

Steve's heart seized, the possibility of the oxygen toxicity being more severe than he thought gnawing at him. Technically, getting Danny to a shallower depth meant the effects may lessen due to reduced pressure and potentially lower the partial pressure of oxygen.

But it was also entirely possible that Danny had been exposed to the extreme partial pressure of oxygen for too long, which would eventually lead to permanent neurological damage or long-term health issues. Steve prayed it wasn't the case. Either way, he knew Danny needed medical attention as soon as possible.

Steve tapped Danny gently on the exposed cheek. "Danno, come on. I need you to wake up."

Nothing.

"Please." Steve's voice cracked. "Please, buddy."

Danny remained stubbornly still.

Steve shook him again. Hard. "Danny!"

Danny stirred, coughing and sputtering as he came to. Panic flickered in his wide eyes, his chest heaved with rapid, shallow breaths, hands trembling as he clutched onto Steve for support.

"It's okay, Danny, you're okay," Steve murmured, his voice strained with fatigue and relief. He held Danny close, trying to steady his friend's erratic breathing. "I've got you, buddy."

"S…teve?" Danny whispered between the panicked gasps.

"I'm here. It's okay, Danno," he said. "Everything's gonna be okay."

The problem was, Steve wasn't sure he believed it anymore.

*to be continued*

Can this get any worse?

Let me know what you think :)