Moonstriker

"Moonstriker," the final book in a series, follows a cynical protagonist who has dedicated years to preventing a volcanic eruption threatening the world, facing indifference from powerful families. As he navigates challenges and makes difficult choices, he is guided by a mysterious stone to support an infuriating yet crucial individual in the fight to save humanity. The story concludes the series' overarching narrative and features the happy ending of key characters.