Sun tries hard to join the band. Prof. Wannasingh sees Sun’s enthusiasm, so he lets Sun observe the band rehearsal. While the band is rehearsing, Sun suddenly has heart symptoms and notices that his bag is torn. All apples that he brought with him to soothe the symptom fell through the bag’s hole. However, Kim also notices that Sun’s bag is torn and knows that Sun needs those apples. What should Kim do when a friend who helped him is in trouble now?