Quick recap
Opal Koboi sets her final plan in motion: her henchmen kill her younger self in the past, and the paradox makes everything she built over five years explode, crippling fairy and human tech. Locked up, Opal opens the Berserker Gate on the Fowl estate, and spirits of ancient warriors possess the twins Myles and Beckett, Juliet, corpses and animals. Artemis, Holly, Butler and Mulch fight for the manor. To close the second gate, Artemis uses Opal's clone, and the spell wipes out all fairy magic there, which kills him because of the eye he got from Holly. Six months later, Foaly grows a clone, Artemis's soul enters it, and Holly starts telling him how they met.
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