Deuk Pal, now inhabiting Yi Heon’s body, arouses suspicion from Se Kyung due to his noticeable deviation from his usual self. Despite Deuk Pal's attempts to mimic Yi Heon's behaviour, the other kids begin to question the sudden change in him. Particularly with Jae Min persisting in ridiculing Yi Heon, Deuk Pal plots a subtle revenge for him.
