Sinopsis
Dr. Ha Won-do returns after 20 years, chasing secrets of the Child of Eternity. Later, the gang faces an attack — still unsure of their powers.
Guest Stars · 12
Cha Seo-won
Koo Jun-mo
Kim Ki-cheon
Ko Sang-mu
Kang Ki-doong
Yang Seok-woo
Seo Woo-jin
Child of Eternity
Jeong Young-ju
Madame Aurora
Kwon Oh-soo
Elder Choi
Han Ji-an
Lee Un-jeong (young)
Shin Tae-yang
Kim Pal-ho (young)
Oh Ji-yul
Seok Ju-ran (young)
Choi So-yul
Seok Ho-ran (young)