Why it was difficult to discipline six children in magical island?

After taking Spa, Lisakhanya drove straight Volkswagen Polo Vivo towards the Killarney Mall to buy fantasy novel. When reached, she felt hungry so went inside the restaurant, there she ordered Rump Steak from the menu and sat in her chair to read WhatsApp messages in her mobile phone. Then when she walked inside the bookstore after filling her appetite, wandering in books shelf but couldn't figure out so she approached the bookstore assistant for suggestion and ask for assistance. 

The book name that was suggested to buy House in the Cerulean Sea. When Lisakhanya asked for reason behind buying this book then bookstore assistant replied that this is one of the bestseller reading fantasy novel, from New York Times, USA Today and Washington Times, written by renowned author TJ Klune, consists of 416 pages. A lonely man aged forty was living peaceful life in his small house. There was an untruthful cat and old records in his abode. Most often, he was looking after safety of children in government-sanctioned orphanages. His name was Linus Baker who worked as case worker and supervises Magical Youth in department. Suddenly, one day, Linus Baker was instructed to reach Marsyas Island Orphanage under very clandestine task to look after six children by senior management. So he had to comply and when he reached there found these were not disciplined ones but of menacing nature. But those children had strange names and were gnome, sprite, wyvern, an unidentifiable green blob, Pomeranian, and the Antichrist. Apart from those six dangerous children, there lived another person, and his name was Arthur Parnassus, who was caretaker in that fantasy magical island. Seeing this unfortunate situation, Linus had only one option, and it was to save his abode from curse of magical island.

When bookstore assistant concluded her saying then Lisakhanya decided to buy book in paperback, she headed towards the cash counter, gave debit card to swipe, and after getting receipt headed towards her home in Sandton with her bought book.