Thanks so much, everyone! As suggested, I tried to make the stakes clearer. Still hacking away at it
Sixteen-year-old Sam Croft used to dream of becoming a veterinarian, travelling the world and scuba diving, but now all his dreams are dead—just like him. In Heaven with his parents, Sam doesn’t know what killed him and his family. Many of their memories are locked away to ensure their bliss. But Sam remembers something his parents don't: his sister, Cara. Determined to find her, he searches Heaven and beyond—to end up in the most nightmarish dimension, created only to torture and punish: Hell. Cara was sent there for his and his parents’ murder. Sam can’t understand what made his sister, a straight A student and a community service volunteer, turn to murder. Whatever her motivations, their deaths did not seem to satisfy her, because she’s concocting a dangerous, yet brilliant plan to follow her parents up to Heaven. Because they can’t die again, they now can feel terrible, terrible pain—for eternity. Being a pacifist, Sam tries talking her out of it, but words can’t hold her. Only a brutal fight will stop her, and Sam must be as ruthless as her to win. But when despair gives way to bloodlust, and sacrificing the innocent becomes a valid option, he realizes the fight is corrupting him. Sam must protect his parents at all costs, but it just might cost him his place in Heaven.