Robbie and his sister discover the joy of sibling closeness. He and his best friend share his sister's delights just before he leaves for University. He meets Norwegian twin sisters and a mature Studies advisor with a kinky side. Reunited with his sister at Christmas, Robbie realizes he could never find any happiness without his sister at his side.
Janey comes home early and discovers her son and daughter indulging their teenage curiosity in the basement. Rather than spoil their fun, the meek housewife decides to secretly indulge her own forbidden desires.
A school nativity play presents a problem for the boy selected to play the Virgin Mary - he can't find a bra big enough! Fortunately he has the help of his *big* sister...