With his sister, India, encased in an amber statue by the vengeful Doctor Tan, North and Rosie follow Javotte's instruction and head to the GRIMM museum, to seek help from Tan's old partner, the mysterious, Gumstone. Under the guidance and protection of Gumstone, Javotte and The Guardians of Amber, North and Rosie must survive the threat of Tan's army of Shadows and navigate more dark and sinister fairy tale worlds, in their search for a rare amber antidote that can save India. Caught between their loyalties to their loved ones and their mission to stop Tan & destroy The End Book - an ancient artefact that grants its possessor the power of death - Rosie and North must trust in each other if they are to succeed in their quest, but trust is not easy when one of them hides the biggest secret of all...