After a failed attempt at reforming her physical body in the Underworld, Sapphire is kicked down to the mortal realm by her father. She arrives with her divine dog who possesses the Book of Life and Death and can "spoiler" any person's past. Together, they save her mortal mother, Mirabella, from a suicide attempt and head to the capital to seek justice.Along the way, the dog identifies the Crown Prince of the North Realm, Ezequiel, as Sapphire's biological father. Little does Sapphire know that her parents can hear her inner thoughts—her identity as the Lord of the Underworld was never a secret! This unconventional family of three joins forces to outsmart a usurping prince and punish a treacherous scumbag and a fake heiress. In a mix of hilarious antics and heartwarming moments, they unmask the villains and protect their newfound bond.