Transform into a tree. It'll be slow so you can still participate in the game for a while, but we'll need to go outside so you can plant your feet in some soil. Good thing it's warm out tonight. Come on girls, we're going outside. We'd better hurry up before Harriet starts growing out of the floor." Harriet looked shocked, expecting something less severe on the first transformation of the night, however decided to comply, knowing that this would likely not be her last transformation tonight.
The other girls complied with Rebbecca's instructions and began to head outside. Rebbecca lived on a rural property with plenty of open space and gardens. The girls were sleeping out in the guest room, a building located hundreds of meters away from the main house. The perfect place for the evening's activities.
Rebbecca leads Harriet and the others around the back of the building to a small garden, freshly laden with soil. "Oh yeah, a word of advice!" Saira said, just remembering something important "You might as well strip down, unless you want to destroy your clothes." Harriet groaned though reluctantly agreeing. "My feet are beginning to feel cramped" she said as she removed her clothing. After removing her shirt and bra she begins removing her shoes and finally her socks. "Gasp! Look at my toes! Look at my feet!" Looking down at Harriet's feet her toe's had become longer and more flaccid, becoming more root like in appearance. The tips of both of her feet were now a pale green/brown color which was slowly moving up her foot. She quickly removed the rest of her clothing and ran over to a fresh patch of soil, digging her feet deeply into it and without noticing letting out a great 'Ahhh' as she did, enjoying the sensation perhaps a little to much. The others just stared at her and smiled.
She felt her feet almost melt away as they became rooted into the ground. The sensation was unlike anything she could of imagined. Her legs were placed firmly together, her head was thrown back in pleasure, not noticing that liquids were escaping from her pussy, until suddenly her bladder emptied in a torrent of urine. With her legs close together it sprayed all over them, eventually getting soaked up in the soil below. The three girls were staring wide eyed at the spectacle before them, not quite sure what to say. Harriet in the other hand had plenty to say "Whaddya looking at!" She yelled. "That wasn't my fault, it just happened!" Krystal giggled, while the other two stopped. "Well then, Krystal? Transform or Dare!" Harriet said.