TV series
I will marry you someday.
Lee Yool falls off a cliff and nearly dies in an attempted assassination. He loses his memory, and wanders for 100 days under a new name and personality. During this period, he meets Hong Sim, head of the first detective agency in Joseon.
Streaming, rental and purchase options
Checked Sep 2, 2026
100 Days My Prince is available to stream on Netflix and Rakuten Viki in United States. Use the direct links below to open the provider.
Lee Yool falls off a cliff and nearly dies in an attempted assassination. He loses his memory, and wanders for 100 days under a new name and personality. During this period, he meets Hong Sim, head of the first detective agency in Joseon.
Choose an episode, then use the watch options above for the show.
Episode 1
Yul falls in love with Yun Yi-seo the son of Yun Bu-jun at first sight. Yul sneaks into Yi-seo's house, but the abrupt rebellion turns her house into chaos. Yi-seo and Yul are forever apart.
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Episode 2
Under the crown prince's command, a spinster Hong Shim is about to become a concubine of lord Park.
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Episode 3
After losing memory, Yul becomes Won-deuk and marries Hong Shim. Awkward and unfamiliar marriage begins.
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Episode 4
Hong Shim is busy taking care of the mess that useless Won-deuk caused. In the palace, people are sent to Mt. Cheongwoosan to find the missing crown prince.
Guest stars Tae Won-seok
Episode 5
Cha-eon searching for the crown prince finds the corpse in the prince's outfit at Mt. Cheongwoosan.
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Episode 6
At the market, Hong Shim chases after a guy who looks like her brother. While Kim Cha-eon hurriedly prepares a funeral for the crown prince, Je-yun is busy solving the puzzle that the prince left.
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Episode 7
With the secret letter that Yul left, Je-yun asks Kim Cha-eon to meet privately. Won-deuk who was looking for Hong Shim gets attacked by the gangsters.
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Episode 8
Kim Cha-eon pressures the king to depose the queen and the prince Seo-won. Hong-shim is uncomfortable about the present that Won-deuk gave her.
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Episode 9
Yul figured that he is not Won-deuk after all. To find the truth, he goes to Hanyang with Gu-dol. Je-yun becomes the new lord of Songju province and meets Hong Shim.
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Episode 10
Won-deuk and Hong Shim realize feelings for each other. As the day when Hong Shim and her brother promised to leave comes, Hong Shim's concern deepens. The king who feared the increasing power of Kim Cha-eon meets Jeong Sa-yeop.
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Episode 11
Won-deuk and Hong Shim prepare for a fleeting together. Je-yun starts investigating Won-deuk's real identity. While Cha-eon is missing after being attacked by the assassins, people suggest Seo-won as the crown prince.
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Episode 12
Won-deuk comes back as the crown prince Yi Yul, but the palace doesn't feel like home, and can't stop worrying Hong Shim.
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Episode 13
Hong Shim tries to avoid Yul to leave with Mu-yeon. Due to the scheme of the queen, Yul attends the banquet to welcome the ambassador from Ming.
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Episode 14
In Hanyang, Hong Shim looks for Mu-yeon. In the meantime, Yul solves the puzzles with Je-yun to find memory.
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Episode 15
Yul recalls everything from the past and goes to So-hye. Hong Shim and the Songju province neighbors go to Kim Cha-eon's house to find Mu-yeon.
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Episode 16
For Yi-seo, Yul goes to war. There, he encounters Kim Cha-eon's private soldiers.
Where to watch 100 Days My PrinceEpisode information updated Sep 17, 2026
Doh Kyung-sooCrown Prince Lee Yool / Won-deuk
Nam Ji-hyunHong-sim / Yoon Yi-seo
Cho Seong-haKim Cha-eon
Cho Han-chulKing
Oh Yeon-ahQueen Park
Ji Min-hyukPrince Seo-won
Kim Seon-hoJung Je-yoon
Jung Hae-kyunHong-sim's Stepfather
tvNSouth Korea
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