Headmaster Tom is mad as hell! He missed an extremely important phone call, after he couldn't enter Girls Boarding School because one of the girls changes the door code! What was meant as a innocuous prank turns into the most severe punishment that Sanna yet received at GBS. Starting with a series of blows with the carpet beater, followed by 30 continuous strokes with the strap and finished with a furious birching leaves Sanna in tears and her swollen buttocks in serious pain that will last for days!