The choreography apparently has an actual storyline or something, even though it looks like a lot of it is being improvised, as the types of motions and moves they use change over the duration. They become faster and more forceful, with sharp stops and swivels, eventually even getting to a point where they spend a bit without moving at all, locked into a step where they stare into each other's eyes and the fabric slowly floats down, or look away from each other in dramatic poses. There comes a part where Sendhei starts lifting Raziya sometimes, twirling her while she's wrapped in the fabric and then twirling her back and freeing it.
It works up to a climax, growing more desperate and animated. The drums accompany the speedup, and the synchronised steps become more frequent, half of the movement of the silks controlled by the magic instead. Going from pure body language, the dance seems to be about lovers going through various troubles together and apart, at times in harmony and at times at cross-purposes. The performance hits a crescendo, with the fabric starting to look less free and more entangled with them, and it might become clearer that it's meant to represent blood, that it flies around and from their necks and wrists and hearts more and more, until eventually—
—everything stops, all at once, with Sendhei holding Raziya's body above his head while she holds herself in an artfully inanimate pose, the silks wrapped around her neck and her face still and pained, as if dying with regrets.
And they just breathe, there, in silence, for several seconds.