Emily and Navin have just moved into their grandfather's abandoned house with their mother. Their grandfather has been missing for decades, so Emily doesn't think twice about picking up the necklace she finds in his library. What she has awakened though, is a gateway to a bizarre and magical world. Suddenly her mother is swallowed whole by a hideous tentacled creature and it's up to Emily and Navin to get her back. So begins the first book in the Amulet series, The Stonekeeper.
It turns out that the necklace is a powerful amulet that can control and protect any surrounding life force. Emily's grandfather's last wish was for her to take up the stone and help save this strange world, known as Alledia, from an evil elf king. Emily also receives several robots that her grandfather single-handedly constructed to help her with this mission. The first robot we meet is the pink rabbit, Miskit, who wields a stun gun while piloting a giant mechanical exoskeleton.