Normally, Hermione Granger is a nice, dull, bookworm and wants nothing but doing her homework and cramming over her well-prepared exams.
However, things are a bit abnormal since it is 2011, just few months before 2012.
And Hermione finds out with wrath that she can no longer handle her study by scanning, reciting and quoting the massive textbooks and she fails miserably on her recent exams.
When she freaks out finally, receiving a P on her whatever class, she is so indignified that she starts to think out of the box.
HAIHAIHAI
that means, getting herself a black-haired, handsome, cute, mature, sociopath, mental, racist boyfriends and manipulate him to finish her exams for her.
So she takes off her time-turner and all in sudden, she is in 1945.