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Season guide

Twenty Five Twenty One: Season 1

16 episodes Premiered Feb 12, 2022 Updated Jul 29, 2026

Twenty Five Twenty One is a 2022 South Korean television series. The series is set in the 1990s and revolves around the lives of two young people whose dreams are affected by a financial crisis. The story follows the characters as they navigate their lives and eventually reunite at the ages of 25 and 21. The series explores themes of friendship and affection in times of adversity as the characters venture into adulth

Season overview

Twenty Five Twenty One is a 2022 South Korean television series. The series is set in the 1990s and revolves around the lives of two young people whose dreams are affected by a financial crisis. The story follows the characters as they navigate their lives and eventually reunite at the ages of 25 and 21. The series explores themes of friendship and affection in times of adversity as the characters venture into adulthood together.

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Episodes

S1·E1

Episode 1

Feb 12, 2022 · 76 min

When the IMF financial crisis threatens to slash Na Hee-do's dreams, she sets out to get herself transferred to another school with a fencing program.

S1·E2

Episode 2

Feb 13, 2022 · 75 min

Though taken aback by Ko Yu-rim's cold attitude, Hee-do gives it her best in their first face-off. More of Back Yi-jin's situation comes into focus.

S1·E3

Episode 3

Feb 19, 2022 · 71 min

When a fortuitous opportunity presents itself, Hee-do begs her coach for extra training. An unanticipated visitor comes around hoping to see Yi-jin.

S1·E4

Episode 4

Feb 20, 2022 · 75 min

In exchange for a favor, Hee-do carries out a daily errand for Moon Ji-woong. She happens across a drunk Yi-jin after he fails another job interview.

S1·E5

Episode 5

Feb 26, 2022 · 77 min

Hee-do takes one giant leap closer to her dream. She's eager to tell Yi-jin the good news — but realizes he's disappeared without a trace.

S1·E6

Episode 6

Feb 27, 2022 · 75 min

Tensions run high between Hee-do and Yu-rim before an important event. Yi-jin takes on a new assignment, and spots a familiar face in the crowd.

S1·E7

Episode 7

Mar 5, 2022 · 73 min

A frustrating media narrative dampens a monumental moment for Hee-do. Yi-jin chases down the only person who may be able to set things right.

S1·E8

Episode 8

Mar 6, 2022 · 73 min

Hee-do perceives a growing distance between herself and Yi-jin, even as he moves back into the neighborhood. Trouble at home adds to Yu-rim's stress.

S1·E9

Episode 9

Mar 12, 2022 · 73 min

As Yu-rim's perspective on Hee-do shifts, so does her behavior. While Hee-do avoids seeing Yi-jin, he volunteers for a special documentary project.

S1·E10

Episode 10

Mar 13, 2022 · 71 min

Under the guise of work, Yi-jin takes Hee-do and Yu-rim on a weekend getaway to the ocean — and agrees to let Ji Seung-wan and Ji-woong tag along.

S1·E11

Episode 11

Mar 19, 2022 · 77 min

Hee-do grows upset when her career-obsessed mother fails to keep a promise. Yi-jin helps out Ji-woong's plans for a grand gesture at a music festival.

S1·E12

Episode 12

Mar 20, 2022 · 75 min

Unable to hold back from putting an end to a teacher's abusive behavior, Seung-wan stands her ground. Hee-do and Yu-rim support a distraught teammate.

S1·E13

Episode 13

Mar 26, 2022 · 75 min

Warnings about allowing his personal ties to affect his work weigh heavily on Yi-jin. The school fencing team enters their last competition together.

S1·E14

Episode 14

Mar 27, 2022 · 79 min

Shouldering the burdens of a sudden misfortune in her family, Yu-rim arrives at a decision that places her in hot water with the public.

S1·E15

Episode 15

Apr 2, 2022 · 89 min

Hee-do once again finds herself opposite her most formidable opponent. Yi-jin is busier than ever after transferring to another department.

S1·E16

Episode 16

Apr 3, 2022 · 90 min

In an emotionally charged exchange, Hee-do and Yi-jin confront the state of their relationship. Hee-do accidentally leaves her diary on a bus.