An ordinary office worker wakes up inside a martial arts novel as a maid in the Demonic Cult. Just as she is about to finish her contract and leave, she is assigned to serve a notoriously ruthless man, throwing all her plans into chaos. As she struggles to survive, she discovers a hidden talent for martial arts and begins attracting dangerous attention from powerful figures within the cult, including the Heavenly Demon himself. Now, while she dreams of escaping, the man at her side seems determined not to let her go.