For Sabrina and Daphne Grimm, life hasn't been a fairytale. After the mysterious disappearance of their parents, the sisters are sent to live with their grandmother - a woman they believed was dead! Granny Relda reveals that the girls have two famous ancestors, the Brothers Grimm, whose classic book of fairytales is actually a history book that documents magical mischief. Now the girls must take on the family responsibility of being fairytale detectives. Their first case? A roller-coaster ride of an adventure to stop a giant from destroying their new home town.