In a world ravaged by drought and oppression under the S.E.N., the Thakaiken, led by young Henry, embark on a daring mission to seize control of the Celestial Sanctuary, where salvation awaits.

After Tenshia is destroyed, Ikhabot and Silas set out to rescue any remaining survivors from the attack on the purgatories, while Atmix falls into the wrong hands while trying to save his sister.

Meanwhile, the S.E.N. resorts to extreme measures as riots erupt and whispers of the water crisis spread. Pressure mounts on the S.E.N. high council to quell the unrest, leading to intervention from the Regents of Nations.

Amidst the chaos, young Henry and his new mentor embark on a journey to unlock the mysteries of heaven during the looming threat of conflict between the S.E.N. and the Tenshians.

NaHash now holds the key to the water crisis. Nonetheless, driven by his ego and relentless desire for glory and control, he keeps the discovery of the Tenshian freshwater ocean to himself.

As the world teeters on the edge of total disarray, alliances shift like sand, and secrets, once zealously hidden, begin to unravel. The fate of humanity hangs between the promise of salvation and total enslavement.