Hihhin kneels, naked in the rising water of Shadow's bathtub. His legs and arms are bound to each other tightly. He patiently waits as the water level rises, submerging his butt. For him, this is not a peril, but an exciting sexual experience. Behind him, Shadow Whip, who is holding a gas mask with a closed rebreather. He slowly covers his pet's face with it, making him feel the latex containing his face. He then slowly straps tightens the strap, both knowing it will stay on for a long time. He is experienced in tightening straps and doesn't need to see them. There is some air inside the rebreather but not a lot.

He turns his pet around and pushes him on his back, Hihhin, whose eyes are covered by the rising water. Only his rebreather is above the water. He says, "At least we can still talk." Hihhin is feeling particularly kinky, wanting to feel the water inside him as he's treated like a toy by Shadow Whip. "I'd rather I didn't breathe if you prefer.", Hihhin says. Shadow obliges, saying "As you wish." He takes off the end cap and pushes it underwater, filling the gas mask. Hihhin exhales under the water resulting in large bubbles bursting. He tries to keep himself breathing. He can barely see or move. To Shadow, Hihhin is being a good boy. He then closes the end cap, trapping the water around Hihhin's face.

After almost a minute of being underwater, trying not to choke and drown in the water in his gas mask, Shadow grabs him. Shadow then pulls him above the water and removes the end cap, releasing the water. The water flows out allowing his pet to breathe again. Feeling horny, he says "Let me catch my breath. Maybe touching me will accelerate my breath loss?" He continues to breathe in until his face turns to its original colour, not that anyone could see. Shadow exploits his hornyness. He pushes his pet down under and holds him down until he starts to bubble, of course losing his air. Once most of it is out, he puts the cap on and then pulls him up. His pet looks at him through the blurry lenses. He grabs his pet's semi-erection and rubs it. After a few strokes, he smiles and releases the end cap. "Breathe, you water slut.", Shadow tells him. Once the water is gone pet breathes again.

Once Hihhin has regained his breath he says, "Thanks. This time, let me have some air and push my back down for one minute. I won't be going anywhere." and pokes his tongue out. Shadow thinks this is a good idea but expects more from his pet. "Hmm. Ask nicely." Hihhin replies, "Please, I don't want to feel like I'm being waterboarded." Shadow is happy to oblige, pushing his pet down. However, not as requested. He pushes Hihhin down, then lets the water fill the rebreather and mask before he closes it. The water is deep enough to completely fill the tub so he closes the tap. "Well, you wish for one minute, you enjoy it." Hihhin holds his breath. He can't breathe at all. The rebreather is full. There's so much water in the tub he can't feel any air around him. To keep his pet contained, he rolls him onto his belly and sits on his back. The expense of energy causes him to exhale. Shadow watches as some small bubbles leave the rebreather. Hihhin is losing his air. He tries to wiggle and rise. The water is too deep and Shadow, heavier than Hihhin is sitting on his back. He has no choice but to hold his breath or drown.

As if this isn't enough, Shadow tries to accelerate the process by playing with his pet with a magic wand. He turns it on, sets it to medium speed then presses it onto his pet's cock. "Show me bubbles." Hihhin struggles to hold his breath. It's been less than a minute and he's vibrating his cock. Hihhin tries not to let it get to him. He needs to hold his breath. Bubbles escape his nose. He tries to close it with the muscles in his face, lest the water fills his nose. Of course, Shadow watches this. He says, "Had enough? Or want to be pushed harder? Nod if you've had enough, or shake if you want it harder." Hihhin is trying not to cum. He nods repeatedly. He's had enough. Shadow being a responsible pet owner gets off his pet's back and pulls him up. Water leaves the rebreather but there is still some inside. Hihhin takes the chance to breathe like he was about to drown but escaped at the last second. He says "Hey, please stop with the vibrating thing."

Shadow holds the power button to turn off the vibrator. "Why?" he asks. "Do you want a serious answer or a made-up answer?", he answers with another question. Shadow wants the serious answer. "Serious," he says. Hihhin answers, "Cum in water turns very sticky. Don't let it happen." Shadow pats his pet's head. Hihhin is breathing in and out, trying to catch his breath again."

Hihhin is breathing. He wants out but Shadow sees he is excited by this and says, "Not yet mate." He kisses his pet's latex mask and giggles. Hihhin can't feel the kiss but says, "Make me hold, knowing the rebreather is only for show." Shadow likes his pet's obedience. "Such a good boy," he says, then sticks his tongue out. Then, "Breathe." Shadow then pushes his pet under the water. He lets out some air since his chest is under pressure. After 43 seconds of breath holding, he pulls his pet up. "Breathe." His pet is gasping. He breathed in too much and had to let some go. "43 seconds. Want to beat that?" Shadow says, then pokes his tongue out. Hihhin wants to but his chest hurts. "Yes, let my chest settle a bit."

Shadow waits for his pet to get ready. Water is dripping from the mask into the full tub. Both are waiting intensely as Hihhin's chest recovers from the strain. After a while, he's ready. "I'm ready," Hihhin says into the latex. Shadow Whip hears this and pushes Hihhin's face into the water. He holds his breath just before he goes under. This time he breathes in a reasonable amount and closes his eyes to relax and hopefully get more time under. After 53 seconds he starts to let out his bubbles and satisfy his urge to let the air out. He is pulled out of the water by Shadow again. He breathes out after almost breathing in water. "How long?" he says. Shadow Whip had been counting. "53 seconds," he says. Then Hihhin says something intense, "It's either that or I reluctantly breath in the water." Shadow Whip takes this seriously. He pushes Hihhin down deep. His chin lay on the bottom of the tub under many inches of water. Shadow Whip tells him, "Breath water then." This is how it ends for poor Hihhin.

He is unable to raise his head above the water. Shadow Whip is too heavy for Hihhin to push off. Shadow closes the cap on the rebreather bag and holds him down. Hihhin shakes his head as he gurgles the water. It goes into his stomach. His chest is burning from the lack of air. He forces his weak body upwards but Shadow is still sitting on top. Shadow is too heavy for Hihhin to possibly move. He ignores Hihhin's cries for help. Hihhin's lungs are tearing themselves apart from the lack of air. Instead of helping, he pats his mate's head. Hihhin tries to move his legs but it's no use, they're still tied together. Then, over a few seconds, the shaking stops.

Shadow Whip giggles and pushes his head above the water. He takes off his mate's gas mask, causing a splash as the water he didn't swallow leaves it. He pushes his mate's tied body out of the tub and starts doing CPR. He punches his wet nose and blows two breaths into Hihhin's maw, then counts to 30 as he pounds on his chest, pushing deep into his heart.