Original: Shade sets the main plot of the novel in motion when he impetuously defies that law , and inadvertently initiates a chain of events that leads to the destruction of his colony 's home , forcing their premature migration , and his separation from them .
Simplified: The main plot of the novel is when Shade defies the law and sets off a chain of events that lead to the destuction of his colony 's home and becoming separated from them .