Official translations:
Season 1:
Despite his weak appearance, Hwasan is not to be underestimated. He is known for his exceptional character, having passed the civil service examination twice, and for his close relationships with various kings and officials. However, his true identity is that of the only successor to the HwaSan sect. He typically spends his time reading in his room and only uses his body for light exercises or yard work. But everything changes when he enters a conflict to save the HwaSan sect's disciples and fights on the front lines. During the attack, their ridge is destroyed, and fake masters slaughter their disciples. Hwasan reveals his identity to find the mastermind behind the attack and make the Hwasan sect a powerful group.
Season 2:
Sung-chang is the successor of Shaolin Temple with a genius brain, but his fragile body prevents him from using his full potential. When the Cheonma Cult attacks the Shaolin Temple, he tries to escape but ends up in a crisis. He hears an unknown voice and wakes up in the body of Yang Ryun-jin, a boy who was buried alive as a sacrifice 300 years ago. The two begin an uncomfortable cohabitation, with the righteous Sung-chang and the greedy Yang Ryun-jin bound together.