Eight years ago, she cruelly abandoned him without a word and indirectly caused his younger sister's death.
Eight years later, desperate for money to pay for her grandfather's medical treatment, she has no choice but to enter the Ji family to atone for her sins. She is the lowliest servant, a mistress kept out of sight, yet she is also someone no one but him is allowed to touch.
He humiliates her at every turn and tramples all over her. He thinks making her suffer will bring him happiness, never realizing that as he torments her, he is tormenting himself, too.
Later, he learns the truth about what happened back then, but by then her heart has long since turned cold.
She vanishes without a trace, and he begins searching for her all over the world like a madman.
He always wanted to drag her into hell, only to discover in the end that wherever she is, that is heaven.
It's okay╮(￣▽￣)╭ I still like it better