In order to escape the fate of a century-old mining slave, the half-demon Chu Yue accepted a bizarre job offer in the fairy world and became a "temporary worker" working undercover for the fairy clan in the demon world. She and her partner were thrown into a lawless land at the junction of the three realms, but they were involved in a shocking conspiracy - the mastermind behind the scenes wanted to awaken the world-destroying existence "The Deep One" sealed by the ancients.
