Reunited rebels Nathan, Haven, Sina and Bardou continue their journey to the Edge during which they discover that lost legends of the past may prevent two realms from tearing Nothing apart.

The Legion of Lava has stirred worry and fear among the regions of Wrenly, and now Ruskin and his dragon friends must wage a war on two fronts: one on the battlefield and one for the very soul of the kingdom.

It begins with the dreams. Cassie has been having strange nightmares of a voice calling to her from deep beneath the ocean. They're unsettling, but it isn't until Cassie discovers Tobias has been having dreams too, the exact same dreams, of a voice pleading for help that she decides it's time to start listening. When pieces of debris wash up on shore, marked with alien writing, the team realises they may still have allies in the fight for Earth, allies...

With his visions offering him a darker path, Sano seeks to find those responsible for his loss, and walk away from revenge and toward forgiveness to find closure. Ridding Eden of the Infinite Night will require him to uncover the secrets behind his father's research on fully rejuvenating the effects of Black in bloodlines with the immense power known as Apple Black. Black Bottom Island has become a war zone as Banburi rebels and cloaks of the country...