At her older sister’s funeral, Bido meets her sister’s lover, Mr. Shin, for the very first time.
She believes he is the reason her sister died—but contrary to her expectations, he approaches her like the only person who can save her.

The more the man she once viewed as a devil begins to look like an angel,
the more Bido finds herself obsessing over someone she should hate.

Caught between love and guilt, salvation and ruin,
Bido is slowly drawn into a whirlwind of tangled emotions.