Ammon and Michael were born and raised on the protected island of Cephas, sharing a childhood dream to become island guardians in the Sector Guard. Bastion, Kristal and Jonah are their best friends and share many joyous childhood memories with them. After enjoying an average week of progression at the Library, Ammon and the others soon find themselves facing grueling training regimes. It is through these unique regimes that they begin to unlock their hidden physical and mental capabilities. Meanwhile, darkness is picking up momentum throughout the world; spirit-born titans wage war on Monoruin with planetary powers, revealing glimpses of the Greater War that affects all of mankind.