Marina had everything clearly planned out in her life: finish school, go to college, become perfect, and only then, at the age of nineteen, start dating guys. But it turned out that fate decided differently, and when the girl met Seryozha, she didn’t even notice. Such a meeting did not fit into the plan, developed to the smallest detail. And what could he find in her, an ordinary girl, except that she likes to solve math problems. But smart Marina didn’t know one thing - love comes not only to perfection!