Mark pointed the device at Heidi and pushed the “Size Transformation” button.
As he pushed the button, Mark discovered the button slid two ways – up and down, presumably to change the target's size from bigger to smaller. He picked a direction to slide the button, and continued to hold it pointed at Heidi.
Mark opens the door, and peeks in her bedroom watching Heidi going through her dresser looking for other surprises that he left for her. As she moves through her clothes with her back turned to him, he looks her up and down with an evil grins. She is currently dressed in some Daisy Duke cut off blue jeans and a tight brown tank top, with no shoes on. As Mark watched his baby faced little sister from behind, he had to admit that she has a lovely young body. He looked over her slender figure, and her round hips with joy. He also loved to watch her curly dark brown hair and her fantastic ass. He then noticed that she had some breast growth too, he thought her breasts were around A’s maybe B size, and perky. Mark then licks his lips, aims the device at Heidi and then stops. He sees that his hot thirty-eight-year-old mother Karen and his other hot little sister nine-year-old Sara in the room with Heidi. They must have come in from the side bedroom door. He then decides to fire the device at all three of them and he shrinks them all down to doll size, and out of their clothes. Mark then watches as three tiny nude figures crawl out of three piles of clothes.