Watch "Revolutionary Sisters: Season 1" on Netflix United Kingdom

While working at a construction site, Lee Cheol-su receives a petition for divorce and his three daughters urge him to accept the separation.

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Cheol-su’s accident causes further strife between him and the sisters. An unexpected death and an astonishing revelation changes everything.

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As the investigation into the death opens, the police begin their questioning and suspicion is all around. Lee Gwang-sik makes a bold decision.

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Gwang-sik returns to tears from her sisters and mistrust from the detective. Bae Byeon-ho’s double life takes a toll, and a witness in the case emerges.

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During an interrogation, doubts are raised and old secrets revealed. Gwang-sik opens a new diner, while Oh Bong-ja is faced with an estranged sister.

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The sisters seek to uncover the contents of a mysterious suitcase belonging to Cheol-su but are caught. Police hit a snag with the witness.

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The sisters urge the police to inspect a certain storage trunk. Lee Gwang-nam catches Byeon-ho sneaking out in the middle of the night.

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Byeon-ho seeks to end things with Shin Maria, causing her patience to run thin. Lee Gwang-tae tails Heo Gi-jin in order to find out more about him.

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Gwang-nam goes into a downward spiral after a shattering revelation. Han Ye-seul’s heroic act leads Gwang-sik to reevaluate his character.

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Gwang-nam’s family gangs up on Maria and gives her a piece of their mind. Gwang-sik and Ye-seul connect over their shared misfortune.

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The capture of a murder suspect brings relief to Cheol-su and panic to Han Dol-se. Maria drives a wedge between Gwang-nam and Byeon-ho.

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Ye-seul scrambles to scout a good lawyer for Dol-se, after a grand gesture of love lands him in trouble. Gwang-tae demands payment from Gi-jin.

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After digging through their father’s trunk and meeting with the police, the sisters get to the truth of the murder. Ji Pung-nyeon grows close to Maria.

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Gwang-sik and Ye-seul start a secret love affair. Gwang-nam asks Byeon-ho for a do-over. Taeng-ja confides in her sister about a hurtful past.

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Gwang-sik and Ye-seul look for Lee Tae-ri while babysitting her twins. Na Pyeon-seung keeps tabs on his wife. Gwang-nam makes a decision.

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Gwang-nam tries to jump-start a new life for herself, while the family debates what she should do next. Pyeon-seung gives Ye-seul a word of warning.

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Gwang-nam’s struggle to land a job begins to take a toll on her. Bong-ja tracks down her sister’s attacker. Ye-seul convinces Pyeon-seung to back off.

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Cheol-su advises Gwang-tae to find employment. Maria attempts to get Byeon-ho to warm up to her. Ye-seul prepares a gift for his father.

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Maria becomes upset when Byeon-ho keeps his distance from her. Ye-seul pours out his heart to his father — about the suit and years of resentment.

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Heo Pung-jin tries to figure out why Gi-jin refuses to get married. An incident at work causes Gwang-nam to question her choices.

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Gwang-nam encounters shocking news at the doctor’s. Maria finds out about a payment Byeon-ho had made. Ye-seul kicks off his singing career.

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Gi-jin defends Gwang-tae’s honor. Hwang Cheon-gil continues to express his interest in Gwang-nam. Bong-ja criticizes Gwang-sik’s relationship.

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Cheon-gil pops the question. Maria sues Gwang-nam. Ye-seul moves out and gets into an argument with Gwang-sik.

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The family celebrates Gwang-nam's big news. Maria grows irritable after going on a diet. Ye-seul tries to make a good impression on Cheol-su.

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Byeon-ho expresses suspicions about Cheon-gil, but no one believes him. Gwang-tae has a hard time dating on a budget. Ye-seul makes his debut.

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With his daughter admitted to the hospital, Cheol-su relives past trauma and seeks legal help for her. Byeon-ho and Maria set off on their honeymoon.

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Gwang-sik prevents Bong-ja and Ye-seul from meeting. Byeon-ho and Pung-nyeon clash over parenting styles. Cheol-su makes a startling discovery at work.

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Upon hearing Byeon-ho’s tragic news, Gwang-nam offers her help. Gwang-sik wishes her aunt happiness and sets her mind to let Ye-seul go.

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Even after a close call at the old house, Cheol-su has a hard time walking away from the money. Ye-seul opposes his father’s remarriage.

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Gwang-nam and Gwang-tae tag behind their father to figure out the secret to his newfound confidence. Bong-ja and Gwang-sik have a heart-to-heart.

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Gi-jin steps up to change Heo Pung-jin's mind. Pung-nyeon resists having Gwang-nam back in Byeon-ho's life. Dol-se learns of his late wife’s last wish.

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Gwang-sik’s business takes a step forward with the help of Jin Jeong-han. Injuries from a car accident force Ye-seul to give up on his dreams.

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Despite encouragement from his team, Ye-seul struggles to recover from a slump. Pung-jin shows up to a family dinner with plans to expose the truth.

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Pung-nyeon gives Gwang-nam a hard time at home. Cheol-su witnesses an alarming scene at the loan office. Gwang-tae tells a lie to convince her father.

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Pung-jin gives Gwang-tae and Gi-jin his blessing. Gwang-sik formally introduces Ye-seul to the family. A joint wedding is on the way.

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Gwang-sik and Gwang-tae prepare for married life, but under very different financial circumstances. Cheol-su learns of a hidden family connection.

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Gwang-tae’s entitlement gets on Gwang-sik’s nerves, while the family shows obvious favoritism for the rich couple. Oh Taeng-ja plans an escape.

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Gwang-nam endures feelings of loneliness until her aunt Bong-ja finds out how she’s being treated at home. Byeon Sa-chae gets dirt on Gwang-tae.

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Pung-jin claims marriage fraud after finding out about Gwang-tae’s lie, while the family tries to make amends on her behalf.

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After a falling out between Gwang-sik and Gwang-tae, Gwang-nam attempts to help them come to an understanding. Gi-jin runs into a mysterious stranger.

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Upon visiting Gwang-tae at her new home, Gwang-sik ends up feeling worse about herself. Pung-nyeon stirs up more conflict at home.

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A conversation between Ye-seul and his estranged brother gets heated as the topic of their father comes up. Na Chi-beom asks Gi-jin for money.

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Despite Gwang-sik’s unending support, Ye-seul decides to put his singing career behind him. Gi-jin scrambles to meet Chi-beom’s growing demands.

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Gwang-tae suspects that Gi-jin is being unfaithful, while Sa-chae looks into what’s been keeping him busy. Gwang-sik gets caught working a night shift.

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Gwang-nam and Byeon-ho hash out years of repressed feelings — for the better. Gwang-sik spots her father on a date. Gi-jin turns to Cheol-su for help.

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The sisters seek out their father’s new love interest. Ye-seul’s newfound popularity — especially a certain female fan — begins to bother Gwang-sik.

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A heartbreaking realization puts Gwang-sik’s marriage in jeopardy. Gwang-nam smooths things over with Pung-nyeon. Chi-beom brings news to Gwang-tae.

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Cheol-su goes missing on the eve of his birthday, while the sisters learn of the secrets that are recorded in his diary.

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The sisters find clues of their father's whereabouts in an old photo. Gwang-sik and Ye-seul continue to drift apart, while Gwang-nam bears good news.

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After coming to realize all that his wife had done for him, Ye-seul begs Gwang-sik for forgiveness. Meanwhile, a wedding is on the way.

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