Watch The First Night with the Duke Season 1 Episode 4 Online
“We Need a Backup Plan” — Watch "The First Night with the Duke" Season 1 Episode 4 online in HD for free. Check streaming providers, cast, and episode details.
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Season 1 Episode 4 — Aired on Jun 19, 2025 • runs about 63 minutes.
Notable cast/guest names in this episode include Seohyun, Ok Taec-yeon, Kwon Han-sol, Seo Bum-june.
This page includes 1 official still(s) (when available) plus legal availability links.
Looking for “watch The First Night with the Duke Season 1 Episode 4 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.
Synopsis
Yi Beon's persistence reached Cha Sun Chaek's family. Cha Sun Chaek encountered a foreigner. Do Hwa Sun persuaded the Queen Dowager to do something in her favor.
Stills
Cast
as Cha Seon-chaek / K
as Prince Kyungsung / Lee Beon
as Cho Eun-ae
as Jeong Su-gyeom
as Do Hwa-seon
as Prince Seonghyeon
as Cha Ho-yeol
as Yoon Deok-jeong
as Cha Jang-ho
as Cha Du-ho
Episodes – Season 1
Trailer / clip
There�s no trailer available for this series right now.
