Isobel and Patricia O’Sullivan didn’t have time to look back when another vacation ended and it was time to get ready for St. Clare. The twins are looking forward to meeting their school friends, but they are especially looking forward to meeting new kids who will surely become their friends. Otherwise it can not be! And even though strict teachers do not take their eyes off mischievous students and load them with boring homework, the friendly company always finds time to have fun, come up with some kind of prank and even arrange a night feast in honor of the birthday of one of the girls.