Two boarding schools sit on either side of a lake. At times they are against each other, at times they work together. That's the way it's always been with the boys from Shiverstone Castle and the girls from Rose Cliffs.
A freezing winter without heating forces the Shiverstones to flee their castle. There's nowhere to go but Rose Cliffs, on the other side of the lake. Stiff regimental order instead of knightly freedom - is this the end of their adventure and fun? No way! Their new situation leads to new ideas and heaps more pranks. But the Rose Cliffs girls are prepared...