Rebecca Split (Sparks will fly)

The planet is in trouble. The Sparkies are here and they haven't come in peace. They feed on decay, and will stop at nothing to satisfy their hunger.
This is the biggest challenge since the extinction of the dinosaurs and a fight that Mother Nature cannot win by herself. A new kind of hero is needed and when the call comes, it is to one who is a little younger and a little more mischievous than expected.
Rebecca is like every other fourteen year old. Her hobbies are sleeping, moaning, eating and searching for answers to the imponderable question 'Why is it always me?' She does have one unique attribute though: the voices in her head are real. Not only that, but they want to come out.
Her toughest fight to that point had been an ongoing crisis with uncontrollable hair, but now she must put aside her teenage troubles and travel the length and breadth of New Zealand, to vanquish the enemy before it's too late. From the wine regions of the Wairarapa, the streets of Auckland and the seal sanctuary of Cape Palister, to the tranquillity of the Pacific Islands, Rebecca must travel to wherever the danger threatens because, whether it interferes with her homework or not, the future of our planet is in her hands.

Rebecca shares her mind and body with three others: Ranga, a red haired conservationist with the fashion sense of an explosion in a paint factory; Psycho, a hard hitting martial arts expert, all adrenalin but more Goth than girl; and Boff, a braniac with an IQ to embarrass a roomful of university professors. With a little help from Oldag, (the living embodiment of Mother Nature,) some magic and an awful lot of luck, they'll face this enemy, share the occasional milkshake and hopefully be back at school before any of the teachers notice. There will be split nails, dodgy outfits and more than the occasional tantrum, but Rebecca and her split personalities will stand together as one, in a showdown that will determine the fate of the world as we know it.