Fifteen-year-old Prudence and her sister Grace have a very strict dad. He is so strict that he doesn’t let them go further to school. The sisters study at home under his constant supervision. And when dad became seriously ill and Prudence had to enter the classroom for the first time in her life, she was at a loss. If it weren't for Rex, a handsome young art teacher, the girl would have remained a black sheep among her peers.

And then she began to notice that she was looking forward to those ten minutes when Rex took her home and they could be together together.