In Red Drops of Rain, three brothers-Alex, Thomas, and Sulkurt-explore the island of Mariana, uncovering the truth behind an ancient curse that brings blood rain when unleashed. The brothers learn that the curse is tied to a malevolent entity sealed away by a blood sacrifice. After inadvertently triggering the curse, they perform a ritual to stop the entity, offering their own blood to seal it once more. Despite enduring immense pain, they succeed in their mission. The blood rain ceases, but the brothers perish, remembered as heroes who sacrificed everything to save the world from darkness.