Ian is stuck in the past while trying to stop an alien prisoner from escaping a human body. After many obstacles, she finds a new weapon that can open a time door and saves Thunder. Meanwhile, Mu Reuk is confused by a strange presence inside him. Other characters, such as Heuk Seol, Cheong Woon, and Neung Pa, are also involved in the search for a divine sword. Ja Jang starts chasing Ian and Mu Reuk.