Violet is very proud of her Aunt Matilda. An Egyptologist, she made an amazing discovery! Having studied the recently found mummy, Matilda realized that it could lead archaeologists to the tomb of Queen Nefertiti herself! Oh, how many treasures are hidden there! But something unimaginable happened: one night the mummy disappeared from the museum! The thieves didn't leave a single piece of evidence! What does this mean? Did the mummy escape on its own? Violet knows: this can’t happen! This means it’s time for her and her friends to take on a new investigation and find the criminals. But will it be so easy to do?