In Grimmgar, a high-magic fantasy world, cataclysmic waves of temporal disasters known as 'tides' frequently strike. To combat these, the world relies on the 'Hero Summoning' ritual. Gods are not mere myths; some reside in the heavens, maintaining order and performing miracles, while others descend to the mortal realm, sealing their divine powers, creating their own clans, and exploring countless mysteries. This is a story of survival and heroism in a world constantly threatened by the tides.