What is the main conflict in Island of the Sequined Love Nun by Christopher Moore?

The island of the Sequined Love Nun, by Christopher Moore is the hysterical tale of the redemption of Tucker Case, a self-involved pilot who lives life to the fullest until finally realizing that his life is quite empty. Through a series of mishaps and with the help of a cross-dressing navigator, a talking fruit bat and the ghost of a World War II bomber pilot, Tucker finally turns his life around and becomes a decent man.