Kate is a yoga instructor with a private studio who films her classes and publishes them online. She sets up two yoga mats and water bottles for her next class with a new student named Jake. She sets up the camera to tape the class and then goes to the door to great her visitor. Jake enters the studio and sets his bag aside before taking his place on the yoga mat next to Kate's. She begins their class with the Warrior pose and stretches out to show the move as an example. She breathes in and out deeply while instructing Jake on how best to control his breath. He tries to do the pose as Kate shows him but he is unsteady and his breath is shaky. After some failures at trying to get him to keep the pose up, Kate says it is time to move on to the next pose. She moves one foot up to her thigh and holds her hands in front of herself while instructing Jake on what to do. He does not do well at holding this pose either and soon Kate gets frustrated at his inability to do the poses. Jake has a bad attitude and finds Kate's instructions to be ridiculous. Kate decides it is time for a quick break and they drop the poses. She tries to reassure Jake but he is not receptive to it. When Kate leaves to go to the washroom Jake watches after her and then his expression grows sinister.
Jake opens his backpack and takes out a zip lock bag with some crushed up powder. He kneels down next to Kate's mat and quietly unscrews the cap to her water. He pours the powder into the bottle and quickly stirs it up. Before Kate returns he has screwed up the bottle, pocketed the bottle, and sat down on the mat in a yoga pose. He pretends to meditate as Kate returns and gives him some advice on his breathing technique. She steps onto her mat and picks up her water bottle, popping it open and taking a long drink from it. Jakes watches with a side eye and a smile as she drinks her drugged water, unaware of what is in store for her. Kate finishes her drink and then instructs Jake on the next pose. They both get into the plank position on the mat while Kate talks through the proper breathing technique. While she is in the plank pose, Kate starts to grow woozy and her eyes are losing focus. She starts to lose her balance and shakes her head confused. Jake feigns concern which Kate brushes off. But the drugs grow stronger by the second and soon she can hardly hold herself up. If feels like the world is going dark and then she passes out face down on the yoga mat with her eyes closed. Jake stares at her for a moment, then stands up and walks over to her mat. He looks down at her with a twisted smile. He leans down and runs a hand through her hair. Jake reaches into his gym bag and takes out a length of cord. He quickly loops it around her ankles and wrists, tying them together. He flips her over on the yoga mat. Kate’s eyes flutter open and she regains focus slowly. Confused and disoriented, trying to make sense of what is happening. She focuses in on the face of her captor grinning evilly down at her and her eyes goes wide as she sees Jake pull out a roll of duct tape from his bag. He taunts her by repeating Kate's instructions on proper breathing as he covers her mouth with a duct tape gag, muffling her cries. Jake breathes correctly now while Kate hyperventilates in terror.
With her mouth duct tape closed and her limbs all tied up, Kate is powerless to resist as Jake puts her through breath play breathing exercises. He starts by covering her mouth and nose with his hand held tightly against her, cutting off her air supply. Kate struggles fiercely trying to escape his grasp but he had her held down firmly. She shakes and tries to cry out but it is muffled by the tape and Jakes hands. Her tied up legs kick out as she tries to get up. Jake holds on tight for a while and then lets go. Kate breathes in quickly through her nose, hyperventilating and pleading in fear. Jake toys with his victim by giving her fake encouragement for their new exercises, then he takes out the duct tape to cover her face further. Kate shakes her head side to side frantically, trying to get away. But Jake brings the tape down towards her, covering her nose and suffocating her with the duct tape. Kate gasps for breath but cannot draw any through the duct tape. Her eyes roll in panic. Then go cross eyed from lack of breath. Her hands strain at their bonds. Her legs kicking frantically, ankles fighting against the bonds. But there is no hope for her escape. Jake holds on to her and watches close as she loses consciousness. Finally after straining and struggling for a while, Kate has no more breath and falls back. Her body twitches as the life escapes and she dies Jake catches his breath from the adrenaline. Looking closely at his fallen victim. He runs his hand over her then stands and looks down at her body, laying limply on the ground with a death stare. Jake leans down and takes the tape off of her mouth and nose, placing it back in his bag. Then he collects his things and makes his escape.