Moo-lim-hak-kyo - Season 1 Episode 4

In order to avoid being expelled, Si Woo and Chi Ang accept an assignment. They have to go to the Peak of Moorim to bring back an item that represents Moorim. Only one of them will be allowed to stay at Moorim so they both fight to bring back the item. Meanwhile, Chae Yoon is still unable to wake up and is tormented by his nightmares.