Artemis fowl is back again, his mother falls sick due to some known and dangerous fairy disease, its only cure was found in a lemur, extinct a few years back. Artemis fowl must go back in time to retrieve the lemur and cure his lemur, but in time he battles his greatest enemy yet, himself. He makes alliances with mulch diggums and himself to battle Opal Koboi who conceived herself in his mother's skin. This story is a master piece, full of adventure and fantasy.