S1·E4 Boon the King Duck vs Wunderkinder
Aired May 15, 2026 60 min ★ 9.8/10 · 4 TMDB votes
Synopsis
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.
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Guest stars
Cha Seo-wonKoo Jun-mo Kim Ki-cheonKo Sang-mu Kang Ki-doongYang Seok-woo Seo Woo-jinChild of Eternity Jeong Young-juMadame Aurora Kwon Oh-sooElder Choi Han Ji-anLee Un-jeong (young) Shin Tae-yangKim Pal-ho (young) Oh Ji-yulSeok Ju-ran (young) Choi So-yulSeok Ho-ran (young) Lee Soo-binKim Na-yeong Park Ye-rinSon Cheong
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