Kate already had a lot of liquids and have a full bladder! So she can start the challenge!!! She must every 5 minutes pee no more than 50 ml,fill a glass and stop! and every 5 minutes drink 50 ml of water !!!! So in total she must pee so many times! Just imagine every 5 minutes!!!! Her pussy hurts from the pressure but she has to live up to the challenge. So she squirms desperately in a growing expectation of each point of release, trying to forget about the pressure! When the time comes, she is happy for a little while, then becomes desperate again as she cannot release everything... She is desperate. Belly is full of piss and water?! But she must win the challenge! Wait for part 2!!!!