Twenty-Five Twenty-One depicts a story from 1998 to 2021. In 1998, twenty-two and eighteen meet for the first time in an uneasy year as the whole world shook and called each others' name and when they became twenty-three and nineteen, they hurt each other. In the year of twenty-four and twenty, they relied on each other, and they loved only when they were twenty-five and twenty-one.
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.
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.
When a fortuitous opportunity presents itself, Hee-do begs her coach for extra training. An unanticipated visitor comes around hoping to see Yi-jin.
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.
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.
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.
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.
Hee-do perceives a growing distance between herself and Yi-jin, even as he moves back into the neighborhood. Trouble at home adds to Yoo-rim's stress.
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.
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.
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.
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.
Warnings about allowing his personal ties affect his work weight heavily on Yi-jin. The school fencing team enter their last competition together.
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.
Hee-do once again finds herself opposite her most formidable opponent. Yi-jin is busier than ever after transferring to another department.
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.
Complete episode guide for Twenty-Five Twenty-One with detailed information about every season and episode including air dates, summaries, ratings, and streaming availability in Brazil.
This episode guide is organized by seasons, making it easy to track your viewing progress or find specific episodes. Use the episode information to plan your binge-watching sessions or catch up on missed episodes.