Three years after being presumed dead in Tartarus, Y/N returns to Camp Jupiter scarred, haunted, and barely alive. Her sudden reappearance sends shockwaves through both camps—especially for Reyna Ramirez Arellano, who secretly spent years mourning the best friend she never got the chance to confess her love to. As old bonds are tested, hidden feelings begin to surface, and the horrors Y/N escaped threaten to follow her home, the two must face not only the monsters of Tartarus, but the years of grief that changed them both forever.