Muggles and Potions

Emily, a 15 year old girl from the muggleworld is in grave danger. The only problem is, she doesn't know anything about it. Out of nowhere she is dropped at the home of the grumpy potions teacher, Severus Snape. Will they manage to get along at these stressfull summerholidays and in this new situation? *I suck at summaries, I'm Dutch so sorry for mistakes, just read :)*