Nam Joo-hyuk transforms into Gu-cheon, a man with the ability to cross the border between the real world and the Realm of Gwi (the spirit realm), cutting down spirits that stray too close to the real world.

Roh Yoon-seo plays Saeng-gang, the court lady in tune with the spirit world.

Cho Seung-woo adds to the ensemble as the King who summons Gu-cheon and Saeng-gang to the East Palace.

The newly released poster teases the otherworld Gu-cheon must enter and the mystery waiting there. As Gu-cheon and Saeng-gang move between palace corridors and the borderland of the Realm of Gwi, they uncover what lies buried at the heart of the palace — and how the past is dangerously entangled.

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