Eighteen-year-old jewellery design prodigy Mela Callahan hits rock bottom after romantic betrayal and class-based humiliation. She makes a wish to a mysterious stone statue, begging for a powerful, loyal lover who will always choose her — only to accidentally summon Satan, Lord of Hell. Bound by a demonic pact, Satan descends to the mortal world and becomes her perfect lover under the identity of Arthur Lucifer, heir to a top-tier financial conglomerate. Satan initially intends only to fulfil the contract and return to Hell once Mela has found happiness. Yet as he accompanies her through her growth, he realises what Mela truly needs is not someone to save her, but the strength to rebuild her self-worth. In the end, the demon who once cared only about upholding the rules chooses to become a man who truly loves her.
