The Heavenly Idol

Rembrary (Kim Min Kyu) is a high priest serving a cult. And he comes from another world. His group worships a deity that connects the underworld to the mortal realm.
By some fluke, Rembrary is propelled to South Korea, where he and a young man named Woo Yeon Woo exchange "souls.
Woo Yeon Woo is a minor K-pop star and member of a fading male group known as Wild Animal. Rembrary finds himself completely overwhelmed by this world he knows nothing about.

All seems lost, but Woo Yeon Woo's biggest fan, Kim Dal (Go Bo Gyeol) refuses to let his career implode. She becomes Wild Animal's new manager... and slowly sets out to rectify the group's fate! But it soon turns out that Rembrary isn't the only person to have moved from the spirit realm to the K-pop scene. Others have also followed him, including a powerful force of chaos. Can Rembrary and Kim Dal save the day?