Rated 19 Secret Lesson

She falls in love at first sight at a cafe run by her younger cousin, but the results aren't so good...

Min-ji has had a crush on her brother-in-law who was her tutor for a long time. She seduces his brother-in-law, Jeong-hyeok, but he doesn't easily fall for it, so she takes special measures.

Min-woo, the consulate general of the overseas consulate, was determined to be Japan's next consulate. For this reason, Min-woo becomes determined to learn Japanese and lives with his wife's friend, Mika, and learns Japanese. Min-woo's assistant, Ji-sung, has a brief relationship with the consul general. The more the unfamiliar is revealed, the more deeply the story of the four-way relationship becomes irreversible.

Kang-seo, a prestigious college student who lived as a tutor and a convenience store part-timer received a tutoring request one day. Kang-seo, who was tutoring the gangster's daughter, goes to bed with the gangster's newly remarried wife, and is soon threatened by the gangster.

Seonghwan is invited to Hyejung's house. On the day of the invitation, I see Hye-jung's sister, Hee-soo, and fall in love with her at first sight. Hee-soo also continues to be attracted to the old first love and younger Sung-hwan. Seong-hwan and Hee-soo have a conflict between their sister and brother. Eventually, my sister secretly engaged in love affair, Sunghwan, who can't miss both, I make an extreme choice to love.

Hwa-in, a beautiful woman who ran a lighting shop at a young age, woke up in the forest. She lost all her memories in an instant... and while being hit by the rain, as if drawn by her instinct, she enters a luxury mansion. One woman and two men greet her. She beings to feel fear from the man who sneaks and peeps at her as if she's being stalked.

Ji-seong who only cares about success is briefly a fitting model at the recommendation of his former college senior, and he uses his senior's wife to fulfill his desires.

Jeong-mi, a pickpocket ex-convict, ends up pickpocketing again to repay Dae-sik off of her father's debt. One day, Hae-joo, who is secretly meeting a detective, has been kidnapped and turned into Dae-sik's prey. The detective then went on a search to find Hae-joo's whereabouts.

As a pickpocket, Hye-bin gets stuck on Seok-gwang's gambling table one day and doesn't realize that those days are the beginning of darker days in her life. Who will survive the last round of gambling? After all the games, Hye-bin steals Seok-gwang's money and runs away.

Sang-woo, who lives with his older brother, is actually related to his brother-in-law. He has his favorite co-worker in the office, but he can't confess because she seems to have a man. One day the opportunity comes, and all the work in question begins.

Manager Jeong falls in love at first sight with the president's wife who came to deliver the goods to the company. Bo-yeong takes her on a phonetic basis to make her her own woman, and after that, Bo-yeong begins to cross the river that she can't escape.

Seul and Suchan, who live in one house, live with their father-in-law. The daughter-in-law, who was heartbroken because of her husband cheating on her, The father-in-law's unpretentious sex life opens her eyes to another sex.

Jun-soo, a rich old man, decides to live in a local villa after retirement due to paralysis and health reasons. Only Jun-soo's wife, Hye-sook, and Joo-seok, will move to the provinces, and Hye-sook will only wait for the day Jun-soo dies. Jun-soo gradually becomes paralyzed, so he relies on a wheelchair, and Hye-sook meets up Joo-seok. However, Jun-soo suffered from paralysis that night. Unaware of this, Hye-sook and Joo-seok hire Jun-soo's caregiver to avoid Jun-soo and enjoy comfortably, but Joo-seok begins to look at the caregiver. After learning about the affair between Hye-sook and Joo-seok, Jun-soo begins to make a secret proposal to So-eun.

PD Jang who works for Tourism TV, goes abroad with his girlfriend Lisa, to film with the reporter, So-hee. During the filming, the director of the company comes and PD Jang witnesses the lobbying of reporter So-hee.

Mi-ka and So-hee who visited Macau to shoot for a bikini model selection competition will accompany their manager. Their guide who's a friend who saw the manager, dazzles Mi-ka and So-hee with the word 'additional points' in the selection competition will participate in the game with the word 'additional points'.

A romantic movie about a man meeting a sex master and having sex.