TG Captions are one of my favorite forms of storytelling. There is no narrative fluff, no extraneous details, just the hook, the twist, and the climax.
I always love playing with transformation into dolls or mannequins. The gender swap element, the helplessness, the feeling of being trapped . . . and the awareness of your sole purpose. Not everybody is so accepting of their fate, but that is what makes this so much fun.