Secret Royal Inspector Joy

Yi Eon visits a relay station nearby to summon backup to suppress Tae Seo’s silver mine. However, he gets shocked after he sees the dead body of Seok Gi on the ground and figures out someone else is going after Tae Seo as well. Meanwhile, Bi Ryeong has no choice but to help Do Soo find Tae Seo’s mine, where he has set up poisonous traps.